13101931 has 2 divisors, whose sum is σ = 13101932. Its totient is φ = 13101930.

The previous prime is 13101923. The next prime is 13101937. The reversal of 13101931 is 13910131.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 13101931 - 2³ = 13101923 is a prime.

It is a super-2 number, since 2×13101931² = 343321191857522, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 13101899 and 13101908.

It is not a weakly prime, because it can be changed into another prime (13101937) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6550965 + 6550966.

It is an arithmetic number, because the mean of its divisors is an integer number (6550966).

Almost surely, 2^13101931 is an apocalyptic number.

13101931 is a deficient number, since it is larger than the sum of its proper divisors (1).

13101931 is an equidigital number, since it uses as much as digits as its factorization.

13101931 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 81, while the sum is 19.

The square root of 13101931 is about 3619.6589618360. The cubic root of 13101931 is about 235.7464179905.

The spelling of 13101931 in words is "thirteen million, one hundred one thousand, nine hundred thirty-one".