31113927 has 24 divisors (see below), whose sum is σ = 51249744. Its totient is φ = 18019584.

The previous prime is 31113923. The next prime is 31113947. The reversal of 31113927 is 72931113.

It is not a de Polignac number, because 31113927 - 2² = 31113923 is a prime.

It is a super-2 number, since 2×31113927² = 1936152906722658, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 31113927.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31113923) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5833 + ... + 9810.

It is an arithmetic number, because the mean of its divisors is an integer number (2135406).

Almost surely, 2^31113927 is an apocalyptic number.

31113927 is a deficient number, since it is larger than the sum of its proper divisors (20135817).

31113927 is a wasteful number, since it uses less digits than its factorization.

31113927 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15679 (or 15676 counting only the distinct ones).

The product of its digits is 1134, while the sum is 27.

The square root of 31113927 is about 5577.9859268378. The cubic root of 31113927 is about 314.5224206649.

The spelling of 31113927 in words is "thirty-one million, one hundred thirteen thousand, nine hundred twenty-seven".