131223112013040 has 80 divisors (see below), whose sum is σ = 406792860415008. Its totient is φ = 34992725511168.

The previous prime is 131223112013003. The next prime is 131223112013041. The reversal of 131223112013040 is 40310211322131.

It is a tau number, because it is divible by the number of its divisors (80).

It is a super-2 number, since 2×131223112013040² (a number of 29 digits) contains 22 as substring.

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 131223112013040.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131223112013041) 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, 112665342 + ... + 113824098.

Almost surely, 2^{131223112013040} is an apocalyptic number.

131223112013040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

131223112013040 is an abundant number, since it is smaller than the sum of its proper divisors (275569748401968).

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

131223112013040 is a wasteful number, since it uses less digits than its factorization.

131223112013040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1630626 (or 1630620 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 24.

Adding to 131223112013040 its reverse (40310211322131), we get a palindrome (171533323335171).

The spelling of 131223112013040 in words is "one hundred thirty-one trillion, two hundred twenty-three billion, one hundred twelve million, thirteen thousand, forty".