131913947278 has 16 divisors (see below), whose sum is σ = 201092855040. Its totient is φ = 64889646136.

The previous prime is 131913947273. The next prime is 131913947281. The reversal of 131913947278 is 872749319131.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131913947273) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1622800 + ... + 1702147.

It is an arithmetic number, because the mean of its divisors is an integer number (12568303440).

Almost surely, 2^131913947278 is an apocalyptic number.

131913947278 is a deficient number, since it is larger than the sum of its proper divisors (69178907762).

131913947278 is a wasteful number, since it uses less digits than its factorization.

131913947278 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3325271.

The product of its digits is 2286144, while the sum is 55.

The spelling of 131913947278 in words is "one hundred thirty-one billion, nine hundred thirteen million, nine hundred forty-seven thousand, two hundred seventy-eight".