31949712 has 30 divisors (see below), whose sum is σ = 89415222. Its totient is φ = 10649856.

The previous prime is 31949699. The next prime is 31949713. The reversal of 31949712 is 21794913.

It can be written as a sum of positive squares in only one way, i.e., 17842176 + 14107536 = 4224^2 + 3756^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (31949713) 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, 110793 + ... + 111080.

Almost surely, 2^31949712 is an apocalyptic number.

It is an amenable number.

31949712 is an abundant number, since it is smaller than the sum of its proper divisors (57465510).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

31949712 is a wasteful number, since it uses less digits than its factorization.

31949712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 221887 (or 221878 counting only the distinct ones).

The product of its digits is 13608, while the sum is 36.

The square root of 31949712 is about 5652.4076286128. The cubic root of 31949712 is about 317.3138164836.

The spelling of 31949712 in words is "thirty-one million, nine hundred forty-nine thousand, seven hundred twelve".