31479264 has 36 divisors (see below), whose sum is σ = 89519976. Its totient is φ = 10492992.

The previous prime is 31479251. The next prime is 31479269. The reversal of 31479264 is 46297413.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31479269) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 54364 + ... + 54939.

It is an arithmetic number, because the mean of its divisors is an integer number (2486666).

Almost surely, 2^31479264 is an apocalyptic number.

It is an amenable number.

31479264 is an abundant number, since it is smaller than the sum of its proper divisors (58040712).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

31479264 is a wasteful number, since it uses less digits than its factorization.

31479264 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109319 (or 109308 counting only the distinct ones).

The product of its digits is 36288, while the sum is 36.

The square root of 31479264 is about 5610.6384663423. The cubic root of 31479264 is about 315.7486651828.

The spelling of 31479264 in words is "thirty-one million, four hundred seventy-nine thousand, two hundred sixty-four".