131570307442440 has 160 divisors (see below), whose sum is σ = 453008335431960. Its totient is φ = 34229673446400.

The previous prime is 131570307442393. The next prime is 131570307442447. The reversal of 131570307442440 is 44244703075131.

131570307442440 is a `hidden beast` number, since 1 + 3 + 1 + 5 + 70 + 30 + 74 + 42 + 440 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 66581977009284 + 64988330433156 = 8159778^2 + 8061534^2 .

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (131570307442447) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 495088131 + ... + 495353810.

Almost surely, 2^{131570307442440} is an apocalyptic number.

131570307442440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

131570307442440 is an abundant number, since it is smaller than the sum of its proper divisors (321438027989520).

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

131570307442440 is a wasteful number, since it uses less digits than its factorization.

131570307442440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 990442005 (or 990441992 counting only the distinct ones).

The product of its (nonzero) digits is 1128960, while the sum is 45.

The spelling of 131570307442440 in words is "one hundred thirty-one trillion, five hundred seventy billion, three hundred seven million, four hundred forty-two thousand, four hundred forty".