131450544531 has 12 divisors (see below), whose sum is σ = 190436434552. Its totient is φ = 87373653696.

The previous prime is 131450544527. The next prime is 131450544551. The reversal of 131450544531 is 135445054131.

131450544531 is a `hidden beast` number, since 1 + 3 + 14 + 50 + 544 + 53 + 1 = 666.

It is not a de Polignac number, because 131450544531 - 2² = 131450544527 is a prime.

It is a super-2 number, since 2×131450544531² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (131450544551) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 21667021 + ... + 21673086.

Almost surely, 2^131450544531 is an apocalyptic number.

131450544531 is a deficient number, since it is larger than the sum of its proper divisors (58985890021).

131450544531 is a wasteful number, since it uses less digits than its factorization.

131450544531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43340450 (or 43340447 counting only the distinct ones).

The product of its (nonzero) digits is 72000, while the sum is 36.

Adding to 131450544531 its reverse (135445054131), we get a palindrome (266895598662).

The spelling of 131450544531 in words is "one hundred thirty-one billion, four hundred fifty million, five hundred forty-four thousand, five hundred thirty-one".