231531421254052 has 12 divisors (see below), whose sum is σ = 405210722323456. Its totient is φ = 115756929161640.

The previous prime is 231531421254047. The next prime is 231531421254097. The reversal of 231531421254052 is 250452124135132.

It is a junction number, because it is equal to n+sod(n) for n = 231531421253996 and 231531421254014.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2195307024 + ... + 2195412487.

Almost surely, 2^{231531421254052} is an apocalyptic number.

It is an amenable number.

231531421254052 is a deficient number, since it is larger than the sum of its proper divisors (173679301069404).

231531421254052 is a wasteful number, since it uses less digits than its factorization.

231531421254052 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4390732698 (or 4390732696 counting only the distinct ones).

The product of its (nonzero) digits is 288000, while the sum is 40.

Adding to 231531421254052 its reverse (250452124135132), we get a palindrome (481983545389184).

The spelling of 231531421254052 in words is "two hundred thirty-one trillion, five hundred thirty-one billion, four hundred twenty-one million, two hundred fifty-four thousand, fifty-two".