231306537112 has 32 divisors (see below), whose sum is σ = 496430197920. Its totient is φ = 98976706560.

The previous prime is 231306537109. The next prime is 231306537139. The reversal of 231306537112 is 211735603132.

It is a super-2 number, since 2×231306537112² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3186003 + ... + 3257794.

It is an arithmetic number, because the mean of its divisors is an integer number (15513443685).

Almost surely, 2^231306537112 is an apocalyptic number.

It is an amenable number.

231306537112 is an abundant number, since it is smaller than the sum of its proper divisors (265123660808).

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

231306537112 is a wasteful number, since it uses less digits than its factorization.

231306537112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6444451 (or 6444447 counting only the distinct ones).

The product of its (nonzero) digits is 22680, while the sum is 34.

The spelling of 231306537112 in words is "two hundred thirty-one billion, three hundred six million, five hundred thirty-seven thousand, one hundred twelve".