31117227 has 8 divisors (see below), whose sum is σ = 41892864. Its totient is φ = 20543208.

The previous prime is 31117217. The next prime is 31117253. The reversal of 31117227 is 72271113.

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

It is not a de Polignac number, because 31117227 - 2²² = 26922923 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 31117197 and 31117206.

It is not an unprimeable number, because it can be changed into a prime (31117217) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 50043 + ... + 50660.

It is an arithmetic number, because the mean of its divisors is an integer number (5236608).

Almost surely, 2^31117227 is an apocalyptic number.

31117227 is a deficient number, since it is larger than the sum of its proper divisors (10775637).

31117227 is a wasteful number, since it uses less digits than its factorization.

31117227 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100809.

The product of its digits is 588, while the sum is 24.

The square root of 31117227 is about 5578.2817246891. The cubic root of 31117227 is about 314.5335398795.

The spelling of 31117227 in words is "thirty-one million, one hundred seventeen thousand, two hundred twenty-seven".