13413931 has 2 divisors, whose sum is σ = 13413932. Its totient is φ = 13413930.

The previous prime is 13413919. The next prime is 13413971. The reversal of 13413931 is 13931431.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 13413931 - 2⁹ = 13413419 is a prime.

It is a super-2 number, since 2×13413931² = 359867089745522, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 13413896 and 13413905.

It is not a weakly prime, because it can be changed into another prime (13413971) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6706965 + 6706966.

It is an arithmetic number, because the mean of its divisors is an integer number (6706966).

Almost surely, 2^13413931 is an apocalyptic number.

13413931 is a deficient number, since it is larger than the sum of its proper divisors (1).

13413931 is an equidigital number, since it uses as much as digits as its factorization.

13413931 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 972, while the sum is 25.

The square root of 13413931 is about 3662.5033788380. The cubic root of 13413931 is about 237.6030562909.

It can be divided in two parts, 13413 and 931, that multiplied together give a triangular number (12487503 = T₄₉₉₇).

The spelling of 13413931 in words is "thirteen million, four hundred thirteen thousand, nine hundred thirty-one".