231302111130 has 24 divisors (see below), whose sum is σ = 601385489172. Its totient is φ = 61680562944.

The previous prime is 231302111071. The next prime is 231302111141. The reversal of 231302111130 is 31111203132.

231302111130 is a `hidden beast` number, since 231 + 302 + 1 + 1 + 1 + 130 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 223491617001 + 7810494129 = 472749^2 + 88377^2 .

It is a super-2 number, since 2×231302111130² (a number of 24 digits) contains 22 as substring.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1285011639 + ... + 1285011818.

Almost surely, 2^231302111130 is an apocalyptic number.

231302111130 is an abundant number, since it is smaller than the sum of its proper divisors (370083378042).

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

231302111130 is a wasteful number, since it uses less digits than its factorization.

231302111130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2570023470 (or 2570023467 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

Adding to 231302111130 its reverse (31111203132), we get a palindrome (262413314262).

The spelling of 231302111130 in words is "two hundred thirty-one billion, three hundred two million, one hundred eleven thousand, one hundred thirty".