131976916326 has 60 divisors (see below), whose sum is σ = 297105296796. Its totient is φ = 43968279060.

The previous prime is 131976916319. The next prime is 131976916327. The reversal of 131976916326 is 623619679131.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131976916327) by changing a digit.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 72078231 + ... + 72080061.

Almost surely, 2^131976916326 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 131976916326, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (148552648398).

131976916326 is an abundant number, since it is smaller than the sum of its proper divisors (165128380470).

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

131976916326 is an frugal number, since it uses more digits than its factorization.

131976916326 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3691 (or 1836 counting only the distinct ones).

The product of its digits is 2204496, while the sum is 54.

Multiplying 131976916326 by its sum of digits (54), we get a square (7126753481604 = 2669598²).

131976916326 divided by its sum of digits (54) gives a square (2444016969 = 49437²).

The spelling of 131976916326 in words is "one hundred thirty-one billion, nine hundred seventy-six million, nine hundred sixteen thousand, three hundred twenty-six".