131002040 has 48 divisors (see below), whose sum is σ = 319188600. Its totient is φ = 48367488.

The previous prime is 131002033. The next prime is 131002073. The reversal of 131002040 is 40200131.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2930 + ... + 16449.

Almost surely, 2^131002040 is an apocalyptic number.

131002040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

131002040 is an abundant number, since it is smaller than the sum of its proper divisors (188186560).

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

131002040 is a wasteful number, since it uses less digits than its factorization.

131002040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19416 (or 19399 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 11.

The square root of 131002040 is about 11445.6122597264. The cubic root of 131002040 is about 507.8779440989.

Adding to 131002040 its reverse (40200131), we get a palindrome (171202171).

The spelling of 131002040 in words is "one hundred thirty-one million, two thousand, forty".