231515001355112 has 16 divisors (see below), whose sum is σ = 434102830886340. Its totient is φ = 115754246452096.

The previous prime is 231515001355111. The next prime is 231515001355139. The reversal of 231515001355112 is 211553100515132.

It can be written as a sum of positive squares in 2 ways, for example, as 191644541093476 + 39870460261636 = 13843574^2 + 6314306^2 .

It is a super-2 number, since 2×231515001355112² (a number of 30 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (231515001355111) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 406475813 + ... + 407044980.

Almost surely, 2^{231515001355112} is an apocalyptic number.

It is an amenable number.

231515001355112 is a deficient number, since it is larger than the sum of its proper divisors (202587829531228).

231515001355112 is a wasteful number, since it uses less digits than its factorization.

231515001355112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 813556372 (or 813556368 counting only the distinct ones).

The product of its (nonzero) digits is 22500, while the sum is 35.

The spelling of 231515001355112 in words is "two hundred thirty-one trillion, five hundred fifteen billion, one million, three hundred fifty-five thousand, one hundred twelve".