31272943 has 12 divisors (see below), whose sum is σ = 34062888. Its totient is φ = 28697760.

The previous prime is 31272937. The next prime is 31272947. The reversal of 31272943 is 34927213.

It is not a de Polignac number, because 31272943 - 2⁹ = 31272431 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31272947) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 35221 + ... + 36097.

It is an arithmetic number, because the mean of its divisors is an integer number (2838574).

Almost surely, 2^31272943 is an apocalyptic number.

31272943 is a deficient number, since it is larger than the sum of its proper divisors (2789945).

31272943 is a wasteful number, since it uses less digits than its factorization.

31272943 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1114 (or 1101 counting only the distinct ones).

The product of its digits is 9072, while the sum is 31.

The square root of 31272943 is about 5592.2216515442. The cubic root of 31272943 is about 315.0573272668.

The spelling of 31272943 in words is "thirty-one million, two hundred seventy-two thousand, nine hundred forty-three".