131307055531 has 8 divisors (see below), whose sum is σ = 139120783200. Its totient is φ = 123503303808.

The previous prime is 131307055487. The next prime is 131307055549. The reversal of 131307055531 is 135550703131.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 131307055531 - 2⁷ = 131307055403 is a prime.

It is a super-2 number, since 2×131307055531² (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 (131307085531) 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, 2466871 + ... + 2519536.

It is an arithmetic number, because the mean of its divisors is an integer number (17390097900).

Almost surely, 2^131307055531 is an apocalyptic number.

131307055531 is a deficient number, since it is larger than the sum of its proper divisors (7813727669).

131307055531 is a wasteful number, since it uses less digits than its factorization.

131307055531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4987973.

The product of its (nonzero) digits is 23625, while the sum is 34.

Adding to 131307055531 its reverse (135550703131), we get a palindrome (266857758662).

The spelling of 131307055531 in words is "one hundred thirty-one billion, three hundred seven million, fifty-five thousand, five hundred thirty-one".