118313431 has 8 divisors (see below), whose sum is σ = 119658384. Its totient is φ = 116973120.

The previous prime is 118313423. The next prime is 118313441. The reversal of 118313431 is 134313811.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 118313431 - 2³ = 118313423 is a prime.

It is a super-2 number, since 2×118313431² = 27996135909983522, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 118313396 and 118313405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (118313411) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 80701 + ... + 82153.

It is an arithmetic number, because the mean of its divisors is an integer number (14957298).

Almost surely, 2^118313431 is an apocalyptic number.

118313431 is a deficient number, since it is larger than the sum of its proper divisors (1344953).

118313431 is a wasteful number, since it uses less digits than its factorization.

118313431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2321.

The product of its digits is 864, while the sum is 25.

The square root of 118313431 is about 10877.1977549367. The cubic root of 118313431 is about 490.9207054044.

The spelling of 118313431 in words is "one hundred eighteen million, three hundred thirteen thousand, four hundred thirty-one".