231317235652 has 12 divisors (see below), whose sum is σ = 404819591680. Its totient is φ = 115654495176.

The previous prime is 231317235601. The next prime is 231317235661. The reversal of 231317235652 is 256532713132.

It is a happy number.

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, 902652 + ... + 1130227.

Almost surely, 2^231317235652 is an apocalyptic number.

It is an amenable number.

231317235652 is a deficient number, since it is larger than the sum of its proper divisors (173502356028).

231317235652 is a wasteful number, since it uses less digits than its factorization.

231317235652 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2061330 (or 2061328 counting only the distinct ones).

The product of its digits is 226800, while the sum is 40.

Adding to 231317235652 its reverse (256532713132), we get a palindrome (487849948784).

The spelling of 231317235652 in words is "two hundred thirty-one billion, three hundred seventeen million, two hundred thirty-five thousand, six hundred fifty-two".