131334557 has 2 divisors, whose sum is σ = 131334558. Its totient is φ = 131334556.

The previous prime is 131334527. The next prime is 131334607. The reversal of 131334557 is 755433131.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 75099556 + 56235001 = 8666^2 + 7499^2 .

It is a cyclic number.

It is not a de Polignac number, because 131334557 - 2⁶ = 131334493 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (131334527) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65667278 + 65667279.

It is an arithmetic number, because the mean of its divisors is an integer number (65667279).

Almost surely, 2^131334557 is an apocalyptic number.

It is an amenable number.

131334557 is a deficient number, since it is larger than the sum of its proper divisors (1).

131334557 is an equidigital number, since it uses as much as digits as its factorization.

131334557 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 18900, while the sum is 32.

The square root of 131334557 is about 11460.1290132354. The cubic root of 131334557 is about 508.3072894896.

Adding to 131334557 its reverse (755433131), we get a palindrome (886767688).

The spelling of 131334557 in words is "one hundred thirty-one million, three hundred thirty-four thousand, five hundred fifty-seven".