131256413 has 2 divisors, whose sum is σ = 131256414. Its totient is φ = 131256412.

The previous prime is 131256397. The next prime is 131256431. The reversal of 131256413 is 314652131.

Together with next prime (131256431) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 129663769 + 1592644 = 11387^2 + 1262^2 .

It is an emirp because it is prime and its reverse (314652131) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 131256413 - 2⁴ = 131256397 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (131256443) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65628206 + 65628207.

It is an arithmetic number, because the mean of its divisors is an integer number (65628207).

Almost surely, 2^131256413 is an apocalyptic number.

It is an amenable number.

131256413 is a deficient number, since it is larger than the sum of its proper divisors (1).

131256413 is an equidigital number, since it uses as much as digits as its factorization.

131256413 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2160, while the sum is 26.

The square root of 131256413 is about 11456.7191202368. The cubic root of 131256413 is about 508.2064552883.

The spelling of 131256413 in words is "one hundred thirty-one million, two hundred fifty-six thousand, four hundred thirteen".