131439903456 has 144 divisors (see below), whose sum is σ = 358569154944. Its totient is φ = 42156753408.

The previous prime is 131439903433. The next prime is 131439903457. The reversal of 131439903456 is 654309934131.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131439903457) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 24783301 + ... + 24788603.

It is an arithmetic number, because the mean of its divisors is an integer number (2490063576).

Almost surely, 2^131439903456 is an apocalyptic number.

131439903456 is a gapful number since it is divisible by the number (16) 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 131439903456, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (179284577472).

131439903456 is an abundant number, since it is smaller than the sum of its proper divisors (227129251488).

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

131439903456 is a wasteful number, since it uses less digits than its factorization.

131439903456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5681 (or 5644 counting only the distinct ones).

The product of its (nonzero) digits is 1049760, while the sum is 48.

The spelling of 131439903456 in words is "one hundred thirty-one billion, four hundred thirty-nine million, nine hundred three thousand, four hundred fifty-six".