131440165602 has 32 divisors (see below), whose sum is σ = 271381622784. Its totient is φ = 42396728400.

The previous prime is 131440165601. The next prime is 131440165631. The reversal of 131440165602 is 206561044131.

131440165602 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (131440165601) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3681963 + ... + 3717489.

It is an arithmetic number, because the mean of its divisors is an integer number (8480675712).

Almost surely, 2^131440165602 is an apocalyptic number.

131440165602 is an abundant number, since it is smaller than the sum of its proper divisors (139941457182).

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

131440165602 is a wasteful number, since it uses less digits than its factorization.

131440165602 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55454.

The product of its (nonzero) digits is 17280, while the sum is 33.

The spelling of 131440165602 in words is "one hundred thirty-one billion, four hundred forty million, one hundred sixty-five thousand, six hundred two".