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2131203030 = 2351116193989
BaseRepresentation
bin111111100000111…
…1001001111010110
312111112020022221120
41333001321033112
513331041444110
6551251024410
7103545632625
oct17701711726
95445208846
102131203030
119a4010420
124b589b106
1327c6c45a8
1416308d6bc
15c717c870
hex7f0793d6

2131203030 has 64 divisors (see below), whose sum is σ = 5584723200. Its totient is φ = 516206720.

The previous prime is 2131203029. The next prime is 2131203031. The reversal of 2131203030 is 303021312.

It is an interprime number because it is at equal distance from previous prime (2131203029) and next prime (2131203031).

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2131203031) 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, 532276 + ... + 536264.

It is an arithmetic number, because the mean of its divisors is an integer number (87261300).

Almost surely, 22131203030 is an apocalyptic number.

2131203030 is an abundant number, since it is smaller than the sum of its proper divisors (3453520170).

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

2131203030 is a wasteful number, since it uses less digits than its factorization.

2131203030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5629.

The product of its (nonzero) digits is 108, while the sum is 15.

The square root of 2131203030 is about 46164.9545651244. The cubic root of 2131203030 is about 1286.8905398376.

Adding to 2131203030 its reverse (303021312), we get a palindrome (2434224342).

The spelling of 2131203030 in words is "two billion, one hundred thirty-one million, two hundred three thousand, thirty".

Divisors: 1 2 3 5 6 10 11 15 22 30 33 55 66 110 165 330 1619 3238 3989 4857 7978 8095 9714 11967 16190 17809 19945 23934 24285 35618 39890 43879 48570 53427 59835 87758 89045 106854 119670 131637 178090 219395 263274 267135 438790 534270 658185 1316370 6458191 12916382 19374573 32290955 38749146 64581910 71040101 96872865 142080202 193745730 213120303 355200505 426240606 710401010 1065601515 2131203030