231503121052 has 96 divisors (see below), whose sum is σ = 475653556224. Its totient is φ = 96545952000.

The previous prime is 231503121019. The next prime is 231503121053. The reversal of 231503121052 is 250121305132.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231503121053) 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, 67828098 + ... + 67831510.

It is an arithmetic number, because the mean of its divisors is an integer number (4954724544).

Almost surely, 2^231503121052 is an apocalyptic number.

It is an amenable number.

231503121052 is an abundant number, since it is smaller than the sum of its proper divisors (244150435172).

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

231503121052 is a wasteful number, since it uses less digits than its factorization.

231503121052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3899 (or 3897 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 25.

Adding to 231503121052 its reverse (250121305132), we get a palindrome (481624426184).

The spelling of 231503121052 in words is "two hundred thirty-one billion, five hundred three million, one hundred twenty-one thousand, fifty-two".