159913431 has 24 divisors (see below), whose sum is σ = 237693456. Its totient is φ = 103541760.

The previous prime is 159913427. The next prime is 159913433. The reversal of 159913431 is 134319951.

159913431 is a `hidden beast` number, since 1 + 599 + 1 + 34 + 31 = 666.

It is not a de Polignac number, because 159913431 - 2² = 159913427 is a prime.

It is a super-2 number, since 2×159913431² = 51144610828383522, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (159913433) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 73621 + ... + 75761.

It is an arithmetic number, because the mean of its divisors is an integer number (9903894).

Almost surely, 2^159913431 is an apocalyptic number.

159913431 is a deficient number, since it is larger than the sum of its proper divisors (77780025).

159913431 is a wasteful number, since it uses less digits than its factorization.

159913431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2383 (or 2380 counting only the distinct ones).

The product of its digits is 14580, while the sum is 36.

The square root of 159913431 is about 12645.6882374982. The cubic root of 159913431 is about 542.7855954809.

The spelling of 159913431 in words is "one hundred fifty-nine million, nine hundred thirteen thousand, four hundred thirty-one".