131255513 has 2 divisors, whose sum is σ = 131255514. Its totient is φ = 131255512.

The previous prime is 131255497. The next prime is 131255543. The reversal of 131255513 is 315552131.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 128981449 + 2274064 = 11357^2 + 1508^2 .

It is a cyclic number.

It is not a de Polignac number, because 131255513 - 2⁴ = 131255497 is a prime.

It is not a weakly prime, because it can be changed into another prime (131255543) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65627756 + 65627757.

It is an arithmetic number, because the mean of its divisors is an integer number (65627757).

Almost surely, 2^131255513 is an apocalyptic number.

It is an amenable number.

131255513 is a deficient number, since it is larger than the sum of its proper divisors (1).

131255513 is an equidigital number, since it uses as much as digits as its factorization.

131255513 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2250, while the sum is 26.

The square root of 131255513 is about 11456.6798419088. The cubic root of 131255513 is about 508.2052937276.

The spelling of 131255513 in words is "one hundred thirty-one million, two hundred fifty-five thousand, five hundred thirteen".