13125971 has 2 divisors, whose sum is σ = 13125972. Its totient is φ = 13125970.

The previous prime is 13125961. The next prime is 13125991. The reversal of 13125971 is 17952131.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 13125971 - 2¹⁴ = 13109587 is a prime.

It is a super-2 number, since 2×13125971² = 344582229385682, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (13125961) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6562985 + 6562986.

It is an arithmetic number, because the mean of its divisors is an integer number (6562986).

Almost surely, 2^13125971 is an apocalyptic number.

13125971 is a deficient number, since it is larger than the sum of its proper divisors (1).

13125971 is an equidigital number, since it uses as much as digits as its factorization.

13125971 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1890, while the sum is 29.

The square root of 13125971 is about 3622.9781948005. The cubic root of 13125971 is about 235.8905158639.

The spelling of 13125971 in words is "thirteen million, one hundred twenty-five thousand, nine hundred seventy-one".