31313227 has 6 divisors (see below), whose sum is σ = 34418804. Its totient is φ = 28466460.

The previous prime is 31313221. The next prime is 31313239. The reversal of 31313227 is 72231313.

It is a happy number.

It is not a de Polignac number, because 31313227 - 2¹⁹ = 30788939 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 31313198 and 31313207.

It is not an unprimeable number, because it can be changed into a prime (31313221) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 129273 + ... + 129514.

Almost surely, 2^31313227 is an apocalyptic number.

31313227 is a deficient number, since it is larger than the sum of its proper divisors (3105577).

31313227 is a wasteful number, since it uses less digits than its factorization.

31313227 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 258809 (or 258798 counting only the distinct ones).

The product of its digits is 756, while the sum is 22.

The square root of 31313227 is about 5595.8222809521. The cubic root of 31313227 is about 315.1925487762.

The spelling of 31313227 in words is "thirty-one million, three hundred thirteen thousand, two hundred twenty-seven".