13963931 has 2 divisors, whose sum is σ = 13963932. Its totient is φ = 13963930.

The previous prime is 13963927. The next prime is 13963973. The reversal of 13963931 is 13936931.

13963931 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is an emirp because it is prime and its reverse (13936931) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 13963931 - 2² = 13963927 is a prime.

It is a super-2 number, since 2×13963931² = 389982737945522, which contains 22 as substring.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 13963891 and 13963900.

It is not a weakly prime, because it can be changed into another prime (13963991) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6981965 + 6981966.

It is an arithmetic number, because the mean of its divisors is an integer number (6981966).

Almost surely, 2^13963931 is an apocalyptic number.

13963931 is a deficient number, since it is larger than the sum of its proper divisors (1).

13963931 is an equidigital number, since it uses as much as digits as its factorization.

13963931 is an evil number, because the sum of its binary digits is even.

The product of its digits is 13122, while the sum is 35.

The square root of 13963931 is about 3736.8343554404. The cubic root of 13963931 is about 240.8070688370.

Subtracting from 13963931 its reverse (13936931), we obtain a cube (27000 = 30³).

The spelling of 13963931 in words is "thirteen million, nine hundred sixty-three thousand, nine hundred thirty-one".