131422557 has 48 divisors (see below), whose sum is σ = 212857152. Its totient is φ = 71850240.

The previous prime is 131422553. The next prime is 131422579. The reversal of 131422557 is 755224131.

It is not a de Polignac number, because 131422557 - 2² = 131422553 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131422553) 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 in 47 ways as a sum of consecutive naturals, for example, 396882 + ... + 397212.

It is an arithmetic number, because the mean of its divisors is an integer number (4434524).

Almost surely, 2^131422557 is an apocalyptic number.

It is an amenable number.

131422557 is a deficient number, since it is larger than the sum of its proper divisors (81434595).

131422557 is a wasteful number, since it uses less digits than its factorization.

131422557 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 458 (or 451 counting only the distinct ones).

The product of its digits is 8400, while the sum is 30.

The square root of 131422557 is about 11463.9677686218. The cubic root of 131422557 is about 508.4207936467.

Adding to 131422557 its reverse (755224131), we get a palindrome (886646688).

It can be divided in two parts, 1314 and 22557, that added together give a triangular number (23871 = T₂₁₈).

The spelling of 131422557 in words is "one hundred thirty-one million, four hundred twenty-two thousand, five hundred fifty-seven".