231228979616 has 12 divisors (see below), whose sum is σ = 455232053682. Its totient is φ = 115614489792.

The previous prime is 231228979603. The next prime is 231228979669. The reversal of 231228979616 is 616979822132.

It can be written as a sum of positive squares in only one way, i.e., 218818128400 + 12410851216 = 467780^2 + 111404^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3612952775 + ... + 3612952838.

Almost surely, 2^231228979616 is an apocalyptic number.

It is an amenable number.

231228979616 is a deficient number, since it is larger than the sum of its proper divisors (224003074066).

231228979616 is an equidigital number, since it uses as much as digits as its factorization.

231228979616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7225905623 (or 7225905615 counting only the distinct ones).

The product of its digits is 3919104, while the sum is 56.

The spelling of 231228979616 in words is "two hundred thirty-one billion, two hundred twenty-eight million, nine hundred seventy-nine thousand, six hundred sixteen".