131861799 has 6 divisors (see below), whose sum is σ = 190467056. Its totient is φ = 87907860.

The previous prime is 131861791. The next prime is 131861801. The reversal of 131861799 is 997168131.

131861799 is a `hidden beast` number, since 13 + 18 + 617 + 9 + 9 = 666.

It is not a de Polignac number, because 131861799 - 2³ = 131861791 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131861791) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 7325647 + ... + 7325664.

Almost surely, 2^131861799 is an apocalyptic number.

131861799 is a deficient number, since it is larger than the sum of its proper divisors (58605257).

131861799 is a wasteful number, since it uses less digits than its factorization.

131861799 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14651317 (or 14651314 counting only the distinct ones).

The product of its digits is 81648, while the sum is 45.

The square root of 131861799 is about 11483.1092914768. The cubic root of 131861799 is about 508.9865804195.

The spelling of 131861799 in words is "one hundred thirty-one million, eight hundred sixty-one thousand, seven hundred ninety-nine".