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13213031013 = 3371343125063
BaseRepresentation
bin11000100111000111…
…01101101001100101
31021002211122112002000
430103203231221211
5204030013443023
610023041035513
7645300624210
oct142343555145
937084575060
1013213031013
115670458846
122689025b99
13132756c360
148d4b80777
15524ed2243
hex3138eda65

13213031013 has 64 divisors (see below), whose sum is σ = 24652615680. Its totient is φ = 6807374784.

The previous prime is 13213030967. The next prime is 13213031071. The reversal of 13213031013 is 31013031231.

It is a happy number.

13213031013 is a `hidden beast` number, since 1 + 321 + 30 + 310 + 1 + 3 = 666.

It is not a de Polignac number, because 13213031013 - 216 = 13212965477 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13213031413) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 43120 + ... + 168182.

It is an arithmetic number, because the mean of its divisors is an integer number (385197120).

Almost surely, 213213031013 is an apocalyptic number.

13213031013 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

13213031013 is a deficient number, since it is larger than the sum of its proper divisors (11439584667).

13213031013 is a wasteful number, since it uses less digits than its factorization.

13213031013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 125135 (or 125129 counting only the distinct ones).

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

Adding to 13213031013 its reverse (31013031231), we get a palindrome (44226062244).

The spelling of 13213031013 in words is "thirteen billion, two hundred thirteen million, thirty-one thousand, thirteen".

Divisors: 1 3 7 9 13 21 27 39 43 63 91 117 129 189 273 301 351 387 559 819 903 1161 1677 2457 2709 3913 5031 8127 11739 15093 35217 105651 125063 375189 875441 1125567 1625819 2626323 3376701 4877457 5377709 7878969 11380733 14632371 16133127 23636907 34142199 37643963 43897113 48399381 69910217 102426597 112931889 145198143 209730651 307279791 338795667 489371519 629191953 1016387001 1468114557 1887575859 4404343671 13213031013