31272039 has 12 divisors (see below), whose sum is σ = 45449976. Its totient is φ = 20719152.

The previous prime is 31272029. The next prime is 31272041. The reversal of 31272039 is 93027213.

It is not a de Polignac number, because 31272039 - 2⁴ = 31272023 is a prime.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31272029) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9192 + ... + 12125.

It is an arithmetic number, because the mean of its divisors is an integer number (3787498).

Almost surely, 2^31272039 is an apocalyptic number.

31272039 is a deficient number, since it is larger than the sum of its proper divisors (14177937).

31272039 is a wasteful number, since it uses less digits than its factorization.

31272039 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21486 (or 21483 counting only the distinct ones).

The product of its (nonzero) digits is 2268, while the sum is 27.

The square root of 31272039 is about 5592.1408244071. The cubic root of 31272039 is about 315.0542914736.

The spelling of 31272039 in words is "thirty-one million, two hundred seventy-two thousand, thirty-nine".