131406402 has 16 divisors (see below), whose sum is σ = 262929600. Its totient is φ = 43782672.

The previous prime is 131406397. The next prime is 131406403. The reversal of 131406402 is 204604131.

It is not an unprimeable number, because it can be changed into a prime (131406403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18099 + ... + 24297.

It is an arithmetic number, because the mean of its divisors is an integer number (16433100).

Almost surely, 2^131406402 is an apocalyptic number.

131406402 is an abundant number, since it is smaller than the sum of its proper divisors (131523198).

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

131406402 is a wasteful number, since it uses less digits than its factorization.

131406402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9737.

The product of its (nonzero) digits is 576, while the sum is 21.

The square root of 131406402 is about 11463.2631479871. The cubic root of 131406402 is about 508.3999604030.

The spelling of 131406402 in words is "one hundred thirty-one million, four hundred six thousand, four hundred two".