118040831 has 4 divisors (see below), whose sum is σ = 118120464. Its totient is φ = 117961200.

The previous prime is 118040827. The next prime is 118040849. The reversal of 118040831 is 138040811.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 138040811 = 367 ⋅376133.

It is a cyclic number.

It is not a de Polignac number, because 118040831 - 2² = 118040827 is a prime.

It is a super-2 number, since 2×118040831² = 27867275566341122, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 118040831.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (118040861) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 37550 + ... + 40571.

It is an arithmetic number, because the mean of its divisors is an integer number (29530116).

Almost surely, 2^118040831 is an apocalyptic number.

118040831 is a deficient number, since it is larger than the sum of its proper divisors (79633).

118040831 is an equidigital number, since it uses as much as digits as its factorization.

118040831 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79632.

The product of its (nonzero) digits is 768, while the sum is 26.

The square root of 118040831 is about 10864.6597277595. The cubic root of 118040831 is about 490.5433802641.

The spelling of 118040831 in words is "one hundred eighteen million, forty thousand, eight hundred thirty-one".