231515321404452 has 96 divisors (see below), whose sum is σ = 576806803550208. Its totient is φ = 72098783522304.

The previous prime is 231515321404441. The next prime is 231515321404457. The reversal of 231515321404452 is 254404123515132.

231515321404452 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (231515321404457) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1585290028 + ... + 1585436060.

It is an arithmetic number, because the mean of its divisors is an integer number (6008404203648).

Almost surely, 2^{231515321404452} is an apocalyptic number.

It is an amenable number.

231515321404452 is an abundant number, since it is smaller than the sum of its proper divisors (345291482145756).

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

231515321404452 is a wasteful number, since it uses less digits than its factorization.

231515321404452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 279689 (or 279687 counting only the distinct ones).

The product of its (nonzero) digits is 576000, while the sum is 42.

Adding to 231515321404452 its reverse (254404123515132), we get a palindrome (485919444919584).

The spelling of 231515321404452 in words is "two hundred thirty-one trillion, five hundred fifteen billion, three hundred twenty-one million, four hundred four thousand, four hundred fifty-two".