131440040 has 32 divisors (see below), whose sum is σ = 296110080. Its totient is φ = 52510272.

The previous prime is 131440033. The next prime is 131440061. The reversal of 131440040 is 40044131.

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, 41969 + ... + 44991.

It is an arithmetic number, because the mean of its divisors is an integer number (9253440).

Almost surely, 2^131440040 is an apocalyptic number.

131440040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

131440040 is an abundant number, since it is smaller than the sum of its proper divisors (164670040).

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

131440040 is a wasteful number, since it uses less digits than its factorization.

131440040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4121 (or 4117 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 131440040 is about 11464.7302628540. The cubic root of 131440040 is about 508.4433375357.

Adding to 131440040 its reverse (40044131), we get a palindrome (171484171).

The spelling of 131440040 in words is "one hundred thirty-one million, four hundred forty thousand, forty".