13931023 has 2 divisors, whose sum is σ = 13931024. Its totient is φ = 13931022.

The previous prime is 13931017. The next prime is 13931039. The reversal of 13931023 is 32013931.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13931023 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 13930985 and 13931003.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13931003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6965511 + 6965512.

It is an arithmetic number, because the mean of its divisors is an integer number (6965512).

Almost surely, 2^13931023 is an apocalyptic number.

13931023 is a deficient number, since it is larger than the sum of its proper divisors (1).

13931023 is an equidigital number, since it uses as much as digits as its factorization.

13931023 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 486, while the sum is 22.

The square root of 13931023 is about 3732.4285659608. The cubic root of 13931023 is about 240.6177546140.

Adding to 13931023 its reverse (32013931), we get a palindrome (45944954).

The spelling of 13931023 in words is "thirteen million, nine hundred thirty-one thousand, twenty-three".