131020142013240 has 128 divisors (see below), whose sum is σ = 393666828710400. Its totient is φ = 34884820615680.

The previous prime is 131020142013227. The next prime is 131020142013251. The reversal of 131020142013240 is 42310241020131.

It is a super-2 number, since 2×131020142013240² (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 131020142013240.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 461617770 + ... + 461901510.

It is an arithmetic number, because the mean of its divisors is an integer number (3075522099300).

Almost surely, 2^{131020142013240} is an apocalyptic number.

131020142013240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

131020142013240 is an abundant number, since it is smaller than the sum of its proper divisors (262646686697160).

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

131020142013240 is a wasteful number, since it uses less digits than its factorization.

131020142013240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 289677 (or 289673 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 24.

Adding to 131020142013240 its reverse (42310241020131), we get a palindrome (173330383033371).

The spelling of 131020142013240 in words is "one hundred thirty-one trillion, twenty billion, one hundred forty-two million, thirteen thousand, two hundred forty".