131257579 has 2 divisors, whose sum is σ = 131257580. Its totient is φ = 131257578.

The previous prime is 131257559. The next prime is 131257583. The reversal of 131257579 is 975752131.

It is a strong prime.

It is an emirp because it is prime and its reverse (975752131) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-131257579 is a prime.

It is not a weakly prime, because it can be changed into another prime (131257549) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65628789 + 65628790.

It is an arithmetic number, because the mean of its divisors is an integer number (65628790).

Almost surely, 2^131257579 is an apocalyptic number.

131257579 is a deficient number, since it is larger than the sum of its proper divisors (1).

131257579 is an equidigital number, since it uses as much as digits as its factorization.

131257579 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 66150, while the sum is 40.

The square root of 131257579 is about 11456.7700072926. The cubic root of 131257579 is about 508.2079601468.

The spelling of 131257579 in words is "one hundred thirty-one million, two hundred fifty-seven thousand, five hundred seventy-nine".