131161766 has 16 divisors (see below), whose sum is σ = 209200320. Its totient is φ = 61461120.

The previous prime is 131161757. The next prime is 131161787. The reversal of 131161766 is 667161131.

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, 56 + ... + 16196.

It is an arithmetic number, because the mean of its divisors is an integer number (13075020).

Almost surely, 2^131161766 is an apocalyptic number.

131161766 is a deficient number, since it is larger than the sum of its proper divisors (78038554).

131161766 is a wasteful number, since it uses less digits than its factorization.

131161766 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16399.

The product of its digits is 4536, while the sum is 32.

The square root of 131161766 is about 11452.5877425148. The cubic root of 131161766 is about 508.0842726044.

The spelling of 131161766 in words is "one hundred thirty-one million, one hundred sixty-one thousand, seven hundred sixty-six".