131312342040 has 128 divisors (see below), whose sum is σ = 429850713600. Its totient is φ = 31825797120.

The previous prime is 131312341961. The next prime is 131312342041. The reversal of 131312342040 is 40243213131.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 131312342040.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131312342041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7342149 + ... + 7360011.

It is an arithmetic number, because the mean of its divisors is an integer number (3358208700).

Almost surely, 2^131312342040 is an apocalyptic number.

131312342040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

131312342040 is an abundant number, since it is smaller than the sum of its proper divisors (298538371560).

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

131312342040 is a wasteful number, since it uses less digits than its factorization.

131312342040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23457 (or 23453 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 24.

Adding to 131312342040 its reverse (40243213131), we get a palindrome (171555555171).

The spelling of 131312342040 in words is "one hundred thirty-one billion, three hundred twelve million, three hundred forty-two thousand, forty".