131340979828 has 12 divisors (see below), whose sum is σ = 231880757220. Its totient is φ = 65089334912.

The previous prime is 131340979801. The next prime is 131340979909. The reversal of 131340979828 is 828979043131.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 11208033424 + 120132946404 = 105868^2 + 346602^2 .

It is a congruent number.

It is an unprimeable number.

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, 145288243 + ... + 145289146.

It is an arithmetic number, because the mean of its divisors is an integer number (19323396435).

Almost surely, 2^131340979828 is an apocalyptic number.

It is an amenable number.

131340979828 is a deficient number, since it is larger than the sum of its proper divisors (100539777392).

131340979828 is a wasteful number, since it uses less digits than its factorization.

131340979828 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 290577506 (or 290577504 counting only the distinct ones).

The product of its (nonzero) digits is 2612736, while the sum is 55.

The spelling of 131340979828 in words is "one hundred thirty-one billion, three hundred forty million, nine hundred seventy-nine thousand, eight hundred twenty-eight".