131544657 has 48 divisors (see below), whose sum is σ = 217676160. Its totient is φ = 76018176.

The previous prime is 131544653. The next prime is 131544661. The reversal of 131544657 is 756445131.

It is an interprime number because it is at equal distance from previous prime (131544653) and next prime (131544661).

It is not a de Polignac number, because 131544657 - 2² = 131544653 is a prime.

It is not an unprimeable number, because it can be changed into a prime (131544653) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 106948 + ... + 108170.

It is an arithmetic number, because the mean of its divisors is an integer number (4534920).

Almost surely, 2^131544657 is an apocalyptic number.

131544657 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

131544657 is a deficient number, since it is larger than the sum of its proper divisors (86131503).

131544657 is a wasteful number, since it uses less digits than its factorization.

131544657 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1302 (or 1299 counting only the distinct ones).

The product of its digits is 50400, while the sum is 36.

The square root of 131544657 is about 11469.2919136274. The cubic root of 131544657 is about 508.5781967728.

Adding to 131544657 its reverse (756445131), we get a palindrome (887989788).

The spelling of 131544657 in words is "one hundred thirty-one million, five hundred forty-four thousand, six hundred fifty-seven".