31064965 has 4 divisors (see below), whose sum is σ = 37277964. Its totient is φ = 24851968.

The previous prime is 31064959. The next prime is 31064983. The reversal of 31064965 is 56946013.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 3207681 + 27857284 = 1791^2 + 5278^2 .

It is a cyclic number.

It is not a de Polignac number, because 31064965 - 2¹¹ = 31062917 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 31064965.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 3106492 + ... + 3106501.

It is an arithmetic number, because the mean of its divisors is an integer number (9319491).

Almost surely, 2^31064965 is an apocalyptic number.

It is an amenable number.

31064965 is a deficient number, since it is larger than the sum of its proper divisors (6212999).

31064965 is an equidigital number, since it uses as much as digits as its factorization.

31064965 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6212998.

The product of its (nonzero) digits is 19440, while the sum is 34.

The square root of 31064965 is about 5573.5953387378. The cubic root of 31064965 is about 314.3573527663.

The spelling of 31064965 in words is "thirty-one million, sixty-four thousand, nine hundred sixty-five".