31614471988 has 18 divisors (see below), whose sum is σ = 60812136098. Its totient is φ = 14370214320.

The previous prime is 31614471983. The next prime is 31614471989. The reversal of 31614471988 is 88917441613.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 18882057744 + 12732414244 = 137412^2 + 112838^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31614471983) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 32659095 + ... + 32660062.

Almost surely, 2^31614471988 is an apocalyptic number.

It is an amenable number.

31614471988 is a deficient number, since it is larger than the sum of its proper divisors (29197664110).

31614471988 is a wasteful number, since it uses less digits than its factorization.

31614471988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65319183 (or 65319170 counting only the distinct ones).

The product of its digits is 1161216, while the sum is 52.

The spelling of 31614471988 in words is "thirty-one billion, six hundred fourteen million, four hundred seventy-one thousand, nine hundred eighty-eight".