131453145531 has 12 divisors (see below), whose sum is σ = 190214032008. Its totient is φ = 87479769024.

The previous prime is 131453145511. The next prime is 131453145553. The reversal of 131453145531 is 135541354131.

131453145531 is a `hidden beast` number, since 1 + 3 + 145 + 31 + 455 + 31 = 666.

It is not a de Polignac number, because 131453145531 - 2⁷ = 131453145403 is a prime.

It is a super-2 number, since 2×131453145531² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (131453145511) 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, 12966430 + ... + 12976563.

It is an arithmetic number, because the mean of its divisors is an integer number (15851169334).

Almost surely, 2^131453145531 is an apocalyptic number.

131453145531 is a deficient number, since it is larger than the sum of its proper divisors (58760886477).

131453145531 is a wasteful number, since it uses less digits than its factorization.

131453145531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25943562 (or 25943559 counting only the distinct ones).

The product of its digits is 54000, while the sum is 36.

Adding to 131453145531 its reverse (135541354131), we get a palindrome (266994499662).

The spelling of 131453145531 in words is "one hundred thirty-one billion, four hundred fifty-three million, one hundred forty-five thousand, five hundred thirty-one".