131991226392 has 16 divisors (see below), whose sum is σ = 329978066040. Its totient is φ = 43997075456.

The previous prime is 131991226349. The next prime is 131991226399. The reversal of 131991226392 is 293622199131.

It is a super-3 number, since 3×131991226392³ (a number of 34 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131991226399) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2749817193 + ... + 2749817240.

Almost surely, 2^131991226392 is an apocalyptic number.

131991226392 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

131991226392 is an abundant number, since it is smaller than the sum of its proper divisors (197986839648).

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

131991226392 is a wasteful number, since it uses less digits than its factorization.

131991226392 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5499634442 (or 5499634438 counting only the distinct ones).

The product of its digits is 314928, while the sum is 48.

The spelling of 131991226392 in words is "one hundred thirty-one billion, nine hundred ninety-one million, two hundred twenty-six thousand, three hundred ninety-two".