131331452144440 has 64 divisors (see below), whose sum is σ = 299619881105760. Its totient is φ = 51799771330560.

The previous prime is 131331452144393. The next prime is 131331452144449. The reversal of 131331452144440 is 44441254133131.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a junction number, because it is equal to n+sod(n) for n = 131331452144393 and 131331452144402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131331452144449) 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, 5757772 + ... + 17199268.

Almost surely, 2^{131331452144440} is an apocalyptic number.

131331452144440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 131331452144440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (149809940552880).

131331452144440 is an abundant number, since it is smaller than the sum of its proper divisors (168288428961320).

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

131331452144440 is a wasteful number, since it uses less digits than its factorization.

131331452144440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11445512 (or 11445508 counting only the distinct ones).

The product of its (nonzero) digits is 276480, while the sum is 40.

The spelling of 131331452144440 in words is "one hundred thirty-one trillion, three hundred thirty-one billion, four hundred fifty-two million, one hundred forty-four thousand, four hundred forty".