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13131031230 = 2335357113619
BaseRepresentation
bin11000011101010101…
…11010001010111110
31020220010100111112000
430032222322022332
5203343020444410
610010551323130
7643253631612
oct141652721276
936803314460
1013131031230
115629141129
1226656804a6
13131358b985
148c7d17342
1551cbd5dc0
hex30eaba2be

13131031230 has 64 divisors (see below), whose sum is σ = 35028460800. Its totient is φ = 3500370720.

The previous prime is 13131031211. The next prime is 13131031231. The reversal of 13131031230 is 3213013131.

It is a happy number.

13131031230 is a `hidden beast` number, since 1 + 313 + 10 + 312 + 30 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13131031231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 957361 + ... + 970979.

It is an arithmetic number, because the mean of its divisors is an integer number (547319700).

Almost surely, 213131031230 is an apocalyptic number.

13131031230 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13131031230 is an abundant number, since it is smaller than the sum of its proper divisors (21897429570).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13131031230 is a wasteful number, since it uses less digits than its factorization.

13131031230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17206 (or 17200 counting only the distinct ones).

The product of its (nonzero) digits is 162, while the sum is 18.

Adding to 13131031230 its reverse (3213013131), we get a palindrome (16344044361).

The spelling of 13131031230 in words is "thirteen billion, one hundred thirty-one million, thirty-one thousand, two hundred thirty".

Divisors: 1 2 3 5 6 9 10 15 18 27 30 45 54 90 135 270 3571 7142 10713 13619 17855 21426 27238 32139 35710 40857 53565 64278 68095 81714 96417 107130 122571 136190 160695 192834 204285 245142 321390 367713 408570 482085 612855 735426 964170 1225710 1838565 3677130 48633449 97266898 145900347 243167245 291800694 437701041 486334490 729501735 875402082 1313103123 1459003470 2188505205 2626206246 4377010410 6565515615 13131031230