31064138 has 20 divisors (see below), whose sum is σ = 54367410. Its totient is φ = 13311144.

The previous prime is 31064119. The next prime is 31064179. The reversal of 31064138 is 83146013.

It can be written as a sum of positive squares in only one way, i.e., 30658369 + 405769 = 5537^2 + 637^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 1568 + ... + 8036.

Almost surely, 2^31064138 is an apocalyptic number.

31064138 is a deficient number, since it is larger than the sum of its proper divisors (23303272).

31064138 is an frugal number, since it uses more digits than its factorization.

31064138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6499 (or 6478 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 26.

The square root of 31064138 is about 5573.5211491480. The cubic root of 31064138 is about 314.3545631731.

The spelling of 31064138 in words is "thirty-one million, sixty-four thousand, one hundred thirty-eight".