118913431 has 16 divisors (see below), whose sum is σ = 149474304. Its totient is φ = 92080224.

The previous prime is 118913429. The next prime is 118913437. The reversal of 118913431 is 134319811.

It is a cyclic number.

It is not a de Polignac number, because 118913431 - 2¹ = 118913429 is a prime.

It is a super-2 number, since 2×118913431² = 28280808144383522, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 118913393 and 118913402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (118913437) 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, 9625 + ... + 18178.

It is an arithmetic number, because the mean of its divisors is an integer number (9342144).

Almost surely, 2^118913431 is an apocalyptic number.

118913431 is a deficient number, since it is larger than the sum of its proper divisors (30560873).

118913431 is a wasteful number, since it uses less digits than its factorization.

118913431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27870.

The product of its digits is 2592, while the sum is 31.

The square root of 118913431 is about 10904.7435091340. The cubic root of 118913431 is about 491.7491712290.

The spelling of 118913431 in words is "one hundred eighteen million, nine hundred thirteen thousand, four hundred thirty-one".