9113931 has 16 divisors (see below), whose sum is σ = 13833120. Its totient is φ = 5927040.

The previous prime is 9113927. The next prime is 9113941. The reversal of 9113931 is 1393119.

It is not a de Polignac number, because 9113931 - 2² = 9113927 is a prime.

It is a super-2 number, since 2×9113931² = 166127476545522, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a nude number because it is divisible by every one of its digits.

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 9113895 and 9113904.

It is not an unprimeable number, because it can be changed into a prime (9113941) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3010 + ... + 5223.

It is an arithmetic number, because the mean of its divisors is an integer number (864570).

Almost surely, 2^9113931 is an apocalyptic number.

9113931 is a deficient number, since it is larger than the sum of its proper divisors (4719189).

9113931 is a wasteful number, since it uses less digits than its factorization.

9113931 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8283 (or 8277 counting only the distinct ones).

The product of its digits is 729, while the sum is 27.

The square root of 9113931 is about 3018.9287835257. The cubic root of 9113931 is about 208.8824304607.

The spelling of 9113931 in words is "nine million, one hundred thirteen thousand, nine hundred thirty-one".