31064263 has 4 divisors (see below), whose sum is σ = 32066368. Its totient is φ = 30062160.

The previous prime is 31064261. The next prime is 31064273. The reversal of 31064263 is 36246013.

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

It is a cyclic number.

It is not a de Polignac number, because 31064263 - 2¹ = 31064261 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 (31064261) 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 3 ways as a sum of consecutive naturals, for example, 501006 + ... + 501067.

It is an arithmetic number, because the mean of its divisors is an integer number (8016592).

Almost surely, 2^31064263 is an apocalyptic number.

31064263 is a deficient number, since it is larger than the sum of its proper divisors (1002105).

31064263 is a wasteful number, since it uses less digits than its factorization.

31064263 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1002104.

The product of its (nonzero) digits is 2592, while the sum is 25.

The square root of 31064263 is about 5573.5323628737. The cubic root of 31064263 is about 314.3549848198.

The spelling of 31064263 in words is "thirty-one million, sixty-four thousand, two hundred sixty-three".