231313152044 has 72 divisors (see below), whose sum is σ = 453423887280. Its totient is φ = 103125664512.

The previous prime is 231313152001. The next prime is 231313152071. The reversal of 231313152044 is 440251313132.

It is a super-2 number, since 2×231313152044² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 231313151998 and 231313152016.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3443402 + ... + 3509934.

It is an arithmetic number, because the mean of its divisors is an integer number (6297553990).

Almost surely, 2^231313152044 is an apocalyptic number.

It is an amenable number.

231313152044 is a deficient number, since it is larger than the sum of its proper divisors (222110735236).

231313152044 is a wasteful number, since it uses less digits than its factorization.

231313152044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66739 (or 66724 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 29.

Adding to 231313152044 its reverse (440251313132), we get a palindrome (671564465176).

The spelling of 231313152044 in words is "two hundred thirty-one billion, three hundred thirteen million, one hundred fifty-two thousand, forty-four".