231209497976 has 16 divisors (see below), whose sum is σ = 437354251200. Its totient is φ = 114581697664.

The previous prime is 231209497973. The next prime is 231209498017. The reversal of 231209497976 is 679794902132.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231209497973) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 127880456 + ... + 127882263.

It is an arithmetic number, because the mean of its divisors is an integer number (27334640700).

Almost surely, 2^231209497976 is an apocalyptic number.

It is an amenable number.

231209497976 is a deficient number, since it is larger than the sum of its proper divisors (206144753224).

231209497976 is a wasteful number, since it uses less digits than its factorization.

231209497976 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 255762838 (or 255762834 counting only the distinct ones).

The product of its (nonzero) digits is 10287648, while the sum is 59.

The spelling of 231209497976 in words is "two hundred thirty-one billion, two hundred nine million, four hundred ninety-seven thousand, nine hundred seventy-six".