131005515040 has 48 divisors (see below), whose sum is σ = 312691293432. Its totient is φ = 51861970944.

The previous prime is 131005515019. The next prime is 131005515077. The reversal of 131005515040 is 40515500131.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 110433923856 + 20571591184 = 332316^2 + 143428^2 .

It is a junction number, because it is equal to n+sod(n) for n = 131005514996 and 131005515014.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4205019 + ... + 4236058.

Almost surely, 2^131005515040 is an apocalyptic number.

131005515040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

131005515040 is an abundant number, since it is smaller than the sum of its proper divisors (181685778392).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

131005515040 is an equidigital number, since it uses as much as digits as its factorization.

131005515040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8441189 (or 8441181 counting only the distinct ones).

The product of its (nonzero) digits is 1500, while the sum is 25.

The spelling of 131005515040 in words is "one hundred thirty-one billion, five million, five hundred fifteen thousand, forty".