31262000018 has 12 divisors (see below), whose sum is σ = 49490951310. Its totient is φ = 14808315456.

The previous prime is 31262000017. The next prime is 31262000023. The reversal of 31262000018 is 81000026213.

It can be written as a sum of positive squares in only one way, i.e., 20074072489 + 11187927529 = 141683^2 + 105773^2 .

It is a junction number, because it is equal to n+sod(n) for n = 31261999957 and 31262000002.

It is not an unprimeable number, because it can be changed into a prime (31262000017) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 21648863 + ... + 21650306.

Almost surely, 2^31262000018 is an apocalyptic number.

31262000018 is a gapful number since it is divisible by the number (38) formed by its first and last digit.

31262000018 is a deficient number, since it is larger than the sum of its proper divisors (18228951292).

31262000018 is a wasteful number, since it uses less digits than its factorization.

31262000018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43299209 (or 43299190 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 23.

The spelling of 31262000018 in words is "thirty-one billion, two hundred sixty-two million, eighteen", and thus it is an aban number.