31264047 has 12 divisors (see below), whose sum is σ = 45221904. Its totient is φ = 20813760.

The previous prime is 31264043. The next prime is 31264073. The reversal of 31264047 is 74046213.

31264047 is a `hidden beast` number, since 3 + 12 + 640 + 4 + 7 = 666.

It is not a de Polignac number, because 31264047 - 2² = 31264043 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 31264047.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31264043) 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, 5958 + ... + 9900.

It is an arithmetic number, because the mean of its divisors is an integer number (3768492).

Almost surely, 2^31264047 is an apocalyptic number.

31264047 is a deficient number, since it is larger than the sum of its proper divisors (13957857).

31264047 is a wasteful number, since it uses less digits than its factorization.

31264047 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4830 (or 4827 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 27.

The square root of 31264047 is about 5591.4262044670. The cubic root of 31264047 is about 315.0274503667.

The spelling of 31264047 in words is "thirty-one million, two hundred sixty-four thousand, forty-seven".