131694407 has 4 divisors (see below), whose sum is σ = 141824760. Its totient is φ = 121564056.

The previous prime is 131694403. The next prime is 131694449. The reversal of 131694407 is 704496131.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 131694407 - 2² = 131694403 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 (131694403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5065157 + ... + 5065182.

It is an arithmetic number, because the mean of its divisors is an integer number (35456190).

Almost surely, 2^131694407 is an apocalyptic number.

131694407 is a deficient number, since it is larger than the sum of its proper divisors (10130353).

131694407 is a wasteful number, since it uses less digits than its factorization.

131694407 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10130352.

The product of its (nonzero) digits is 18144, while the sum is 35.

The square root of 131694407 is about 11475.8183586183. The cubic root of 131694407 is about 508.7711114961.

It can be divided in two parts, 13169 and 4407, that added together give a cube (17576 = 26³).

The spelling of 131694407 in words is "one hundred thirty-one million, six hundred ninety-four thousand, four hundred seven".