131257382145 has 16 divisors (see below), whose sum is σ = 210235966080. Its totient is φ = 69929218944.

The previous prime is 131257382063. The next prime is 131257382147. The reversal of 131257382145 is 541283752131.

It is a happy number.

It is not a de Polignac number, because 131257382145 - 2⁸ = 131257381889 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 131257382097 and 131257382106.

It is not an unprimeable number, because it can be changed into a prime (131257382147) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4655365 + ... + 4683474.

It is an arithmetic number, because the mean of its divisors is an integer number (13139747880).

Almost surely, 2^131257382145 is an apocalyptic number.

131257382145 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

131257382145 is a deficient number, since it is larger than the sum of its proper divisors (78978583935).

131257382145 is an equidigital number, since it uses as much as digits as its factorization.

131257382145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9339784.

The product of its digits is 201600, while the sum is 42.

The spelling of 131257382145 in words is "one hundred thirty-one billion, two hundred fifty-seven million, three hundred eighty-two thousand, one hundred forty-five".