131316781166 has 16 divisors (see below), whose sum is σ = 197858641680. Its totient is φ = 65364203520.

The previous prime is 131316781117. The next prime is 131316781207. The reversal of 131316781166 is 661187613131.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 803681 + ... + 953171.

It is an arithmetic number, because the mean of its divisors is an integer number (12366165105).

Almost surely, 2^131316781166 is an apocalyptic number.

131316781166 is a deficient number, since it is larger than the sum of its proper divisors (66541860514).

131316781166 is a wasteful number, since it uses less digits than its factorization.

131316781166 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 151459.

The product of its digits is 108864, while the sum is 44.

The spelling of 131316781166 in words is "one hundred thirty-one billion, three hundred sixteen million, seven hundred eighty-one thousand, one hundred sixty-six".