113431905189 has 12 divisors (see below), whose sum is σ = 164369559276. Its totient is φ = 75379666752.

The previous prime is 113431905137. The next prime is 113431905233. The reversal of 113431905189 is 981509134311.

113431905189 is a `hidden beast` number, since 1 + 1 + 3 + 43 + 1 + 90 + 518 + 9 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 19639780164 + 93792125025 = 140142^2 + 306255^2 .

It is not a de Polignac number, because 113431905189 - 2¹³ = 113431896997 is a prime.

It is a super-2 number, since 2×113431905189² (a number of 23 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (113431905109) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 20130642 + ... + 20136275.

It is an arithmetic number, because the mean of its divisors is an integer number (13697463273).

Almost surely, 2^113431905189 is an apocalyptic number.

It is an amenable number.

113431905189 is a deficient number, since it is larger than the sum of its proper divisors (50937654087).

113431905189 is a wasteful number, since it uses less digits than its factorization.

113431905189 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40267236 (or 40267233 counting only the distinct ones).

The product of its (nonzero) digits is 116640, while the sum is 45.

The spelling of 113431905189 in words is "one hundred thirteen billion, four hundred thirty-one million, nine hundred five thousand, one hundred eighty-nine".