131312040 has 64 divisors (see below), whose sum is σ = 414676800. Its totient is φ = 33172992.

The previous prime is 131312033. The next prime is 131312047. The reversal of 131312040 is 40213131.

It is an interprime number because it is at equal distance from previous prime (131312033) and next prime (131312047).

It is a Harshad number since it is a multiple of its sum of digits (15).

It is not an unprimeable number, because it can be changed into a prime (131312047) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26517 + ... + 31076.

It is an arithmetic number, because the mean of its divisors is an integer number (6479325).

Almost surely, 2^131312040 is an apocalyptic number.

131312040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

131312040 is an abundant number, since it is smaller than the sum of its proper divisors (283364760).

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

131312040 is a wasteful number, since it uses less digits than its factorization.

131312040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57626 (or 57622 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 131312040 is about 11459.1465650807. The cubic root of 131312040 is about 508.2782384673.

Adding to 131312040 its reverse (40213131), we get a palindrome (171525171).

The spelling of 131312040 in words is "one hundred thirty-one million, three hundred twelve thousand, forty".