31264285 has 8 divisors (see below), whose sum is σ = 40403160. Its totient is φ = 23087424.

The previous prime is 31264283. The next prime is 31264313. The reversal of 31264285 is 58246213.

It can be written as a sum of positive squares in 4 ways, for example, as 1790244 + 29474041 = 1338^2 + 5429^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 31264285 - 2¹ = 31264283 is a prime.

It is a super-2 number, since 2×31264285² = 1954911033122450, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31264283) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 240430 + ... + 240559.

It is an arithmetic number, because the mean of its divisors is an integer number (5050395).

Almost surely, 2^31264285 is an apocalyptic number.

It is an amenable number.

31264285 is a deficient number, since it is larger than the sum of its proper divisors (9138875).

31264285 is a wasteful number, since it uses less digits than its factorization.

31264285 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 481007.

The product of its digits is 11520, while the sum is 31.

The square root of 31264285 is about 5591.4474870109. The cubic root of 31264285 is about 315.0282497550.

The spelling of 31264285 in words is "thirty-one million, two hundred sixty-four thousand, two hundred eighty-five".