118274831 has 4 divisors (see below), whose sum is σ = 125232192. Its totient is φ = 111317472.

The previous prime is 118274813. The next prime is 118274837. The reversal of 118274831 is 138472811.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 138472811 = 23 ⋅6020557.

It is a cyclic number.

It is not a de Polignac number, because 118274831 - 2²⁶ = 51165967 is a prime.

It is a super-2 number, since 2×118274831² = 27977871296157122, 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 = 118274791 and 118274800.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (118274837) 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, 3478655 + ... + 3478688.

It is an arithmetic number, because the mean of its divisors is an integer number (31308048).

Almost surely, 2^118274831 is an apocalyptic number.

118274831 is a deficient number, since it is larger than the sum of its proper divisors (6957361).

118274831 is an equidigital number, since it uses as much as digits as its factorization.

118274831 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6957360.

The product of its digits is 10752, while the sum is 35.

The square root of 118274831 is about 10875.4232561312. The cubic root of 118274831 is about 490.8673116344.

The spelling of 118274831 in words is "one hundred eighteen million, two hundred seventy-four thousand, eight hundred thirty-one".