131123155235340 has 48 divisors (see below), whose sum is σ = 378988216427520. Its totient is φ = 33838233608640.

The previous prime is 131123155235297. The next prime is 131123155235341. The reversal of 131123155235340 is 43532551321131.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (131123155235341) 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, 35248158150 + ... + 35248161869.

It is an arithmetic number, because the mean of its divisors is an integer number (7895587842240).

Almost surely, 2^{131123155235340} is an apocalyptic number.

131123155235340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

131123155235340 is an abundant number, since it is smaller than the sum of its proper divisors (247865061192180).

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

131123155235340 is a wasteful number, since it uses less digits than its factorization.

131123155235340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70496320062 (or 70496320060 counting only the distinct ones).

The product of its (nonzero) digits is 162000, while the sum is 39.

The spelling of 131123155235340 in words is "one hundred thirty-one trillion, one hundred twenty-three billion, one hundred fifty-five million, two hundred thirty-five thousand, three hundred forty".