231343511216 has 20 divisors (see below), whose sum is σ = 451499794872. Its totient is φ = 114827435136.

The previous prime is 231343511153. The next prime is 231343511233. The reversal of 231343511216 is 612115343132.

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, 52767770 + ... + 52772153.

Almost surely, 2^231343511216 is an apocalyptic number.

It is an amenable number.

231343511216 is a deficient number, since it is larger than the sum of its proper divisors (220156283656).

231343511216 is a wasteful number, since it uses less digits than its factorization.

231343511216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105540068 (or 105540062 counting only the distinct ones).

The product of its digits is 12960, while the sum is 32.

Adding to 231343511216 its reverse (612115343132), we get a palindrome (843458854348).

The spelling of 231343511216 in words is "two hundred thirty-one billion, three hundred forty-three million, five hundred eleven thousand, two hundred sixteen".