131919689 has 16 divisors (see below), whose sum is σ = 148663296. Its totient is φ = 116006400.

The previous prime is 131919659. The next prime is 131919691. The reversal of 131919689 is 986919131.

It is a cyclic number.

It is not a de Polignac number, because 131919689 - 2¹⁶ = 131854153 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (131919659) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 76889 + ... + 78585.

It is an arithmetic number, because the mean of its divisors is an integer number (9291456).

Almost surely, 2^131919689 is an apocalyptic number.

It is an amenable number.

131919689 is a deficient number, since it is larger than the sum of its proper divisors (16743607).

131919689 is a wasteful number, since it uses less digits than its factorization.

131919689 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1936.

The product of its digits is 104976, while the sum is 47.

The square root of 131919689 is about 11485.6296736400. The cubic root of 131919689 is about 509.0610546607.

The spelling of 131919689 in words is "one hundred thirty-one million, nine hundred nineteen thousand, six hundred eighty-nine".