13942931 has 2 divisors, whose sum is σ = 13942932. Its totient is φ = 13942930.

The previous prime is 13942919. The next prime is 13942937. The reversal of 13942931 is 13924931.

It is a strong prime.

It is an emirp because it is prime and its reverse (13924931) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13942931 is a prime.

It is a super-2 number, since 2×13942931² = 388810649741522, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (13942937) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6971465 + 6971466.

It is an arithmetic number, because the mean of its divisors is an integer number (6971466).

Almost surely, 2^13942931 is an apocalyptic number.

13942931 is a deficient number, since it is larger than the sum of its proper divisors (1).

13942931 is an equidigital number, since it uses as much as digits as its factorization.

13942931 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5832, while the sum is 32.

The square root of 13942931 is about 3734.0234332420. The cubic root of 13942931 is about 240.6862937350.

The spelling of 13942931 in words is "thirteen million, nine hundred forty-two thousand, nine hundred thirty-one".