118838731 has 8 divisors (see below), whose sum is σ = 129809664. Its totient is φ = 107895720.

The previous prime is 118838729. The next prime is 118838743. The reversal of 118838731 is 137838811.

It is a happy number.

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 118838731 - 2¹ = 118838729 is a prime.

It is a super-2 number, since 2×118838731² = 28245287971380722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (118538731) 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, 2490 + ... + 15616.

It is an arithmetic number, because the mean of its divisors is an integer number (16226208).

Almost surely, 2^118838731 is an apocalyptic number.

118838731 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

118838731 is a deficient number, since it is larger than the sum of its proper divisors (10970933).

118838731 is a wasteful number, since it uses less digits than its factorization.

118838731 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13961.

The product of its digits is 32256, while the sum is 40.

The square root of 118838731 is about 10901.3178561126. The cubic root of 118838731 is about 491.6461793372.

The spelling of 118838731 in words is "one hundred eighteen million, eight hundred thirty-eight thousand, seven hundred thirty-one".