31132072 has 16 divisors (see below), whose sum is σ = 58534740. Its totient is φ = 15522816.

The previous prime is 31132067. The next prime is 31132093. The reversal of 31132072 is 27023113.

It can be written as a sum of positive squares in 2 ways, for example, as 30846916 + 285156 = 5554^2 + 534^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2233 + ... + 8200.

Almost surely, 2^31132072 is an apocalyptic number.

It is an amenable number.

31132072 is a deficient number, since it is larger than the sum of its proper divisors (27402668).

31132072 is a wasteful number, since it uses less digits than its factorization.

31132072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10812 (or 10808 counting only the distinct ones).

The product of its (nonzero) digits is 252, while the sum is 19.

The square root of 31132072 is about 5579.6121729023. The cubic root of 31132072 is about 314.5835497779.

Adding to 31132072 its reverse (27023113), we get a palindrome (58155185).

The spelling of 31132072 in words is "thirty-one million, one hundred thirty-two thousand, seventy-two".