131506570 has 16 divisors (see below), whose sum is σ = 254920680. Its totient is φ = 48556224.

The previous prime is 131506567. The next prime is 131506579. The reversal of 131506570 is 75605131.

It can be written as a sum of positive squares in 4 ways, for example, as 82464561 + 49042009 = 9081^2 + 7003^2 .

It is not an unprimeable number, because it can be changed into a prime (131506579) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 505665 + ... + 505924.

Almost surely, 2^131506570 is an apocalyptic number.

131506570 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

131506570 is a deficient number, since it is larger than the sum of its proper divisors (123414110).

131506570 is a wasteful number, since it uses less digits than its factorization.

131506570 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1011609.

The product of its (nonzero) digits is 3150, while the sum is 28.

The square root of 131506570 is about 11467.6314032149. The cubic root of 131506570 is about 508.5291080249.

The spelling of 131506570 in words is "one hundred thirty-one million, five hundred six thousand, five hundred seventy".