31123680232 has 32 divisors (see below), whose sum is σ = 60599193480. Its totient is φ = 14974295040.

The previous prime is 31123680229. The next prime is 31123680253. The reversal of 31123680232 is 23208632113.

It can be written as a sum of positive squares in 4 ways, for example, as 23419405156 + 7704275076 = 153034^2 + 87774^2 .

It is a junction number, because it is equal to n+sod(n) for n = 31123680194 and 31123680203.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 625983 + ... + 673870.

Almost surely, 2^31123680232 is an apocalyptic number.

It is an amenable number.

31123680232 is a deficient number, since it is larger than the sum of its proper divisors (29475513248).

31123680232 is a wasteful number, since it uses less digits than its factorization.

31123680232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1299973 (or 1299969 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 31.

The spelling of 31123680232 in words is "thirty-one billion, one hundred twenty-three million, six hundred eighty thousand, two hundred thirty-two".