168112431 has 12 divisors (see below), whose sum is σ = 244684440. Its totient is φ = 111218640.

The previous prime is 168112403. The next prime is 168112453. The reversal of 168112431 is 134211861.

It is a happy number.

It is not a de Polignac number, because 168112431 - 2¹³ = 168104239 is a prime.

It is a super-2 number, since 2×168112431² = 56523578913459522, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 168112395 and 168112404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (168112331) 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, 70116 + ... + 72473.

It is an arithmetic number, because the mean of its divisors is an integer number (20390370).

Almost surely, 2^168112431 is an apocalyptic number.

168112431 is a deficient number, since it is larger than the sum of its proper divisors (76572009).

168112431 is a wasteful number, since it uses less digits than its factorization.

168112431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142726 (or 142723 counting only the distinct ones).

The product of its digits is 1152, while the sum is 27.

The square root of 168112431 is about 12965.8177914083. The cubic root of 168112431 is about 551.9078985436.

The spelling of 168112431 in words is "one hundred sixty-eight million, one hundred twelve thousand, four hundred thirty-one".