13023971 has 2 divisors, whose sum is σ = 13023972. Its totient is φ = 13023970.

The previous prime is 13023961. The next prime is 13023973. The reversal of 13023971 is 17932031.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13023971 is a prime.

It is a Sophie Germain prime.

Together with 13023973, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 13023971.

It is not a weakly prime, because it can be changed into another prime (13023973) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6511985 + 6511986.

It is an arithmetic number, because the mean of its divisors is an integer number (6511986).

Almost surely, 2^13023971 is an apocalyptic number.

13023971 is a deficient number, since it is larger than the sum of its proper divisors (1).

13023971 is an equidigital number, since it uses as much as digits as its factorization.

13023971 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1134, while the sum is 26.

The square root of 13023971 is about 3608.8739240932. The cubic root of 13023971 is about 235.2779027098.

The spelling of 13023971 in words is "thirteen million, twenty-three thousand, nine hundred seventy-one".