118022731 has 4 divisors (see below), whose sum is σ = 118289592. Its totient is φ = 117755872.

The previous prime is 118022717. The next prime is 118022753. The reversal of 118022731 is 137220811.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 118022731 - 2¹³ = 118014539 is a prime.

It is a super-3 number, since 3×118022731³ (a number of 25 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 118022696 and 118022705.

It is not an unprimeable number, because it can be changed into a prime (118022701) 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, 132766 + ... + 133651.

It is an arithmetic number, because the mean of its divisors is an integer number (29572398).

Almost surely, 2^118022731 is an apocalyptic number.

118022731 is a deficient number, since it is larger than the sum of its proper divisors (266861).

118022731 is an equidigital number, since it uses as much as digits as its factorization.

118022731 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 266860.

The product of its (nonzero) digits is 672, while the sum is 25.

The square root of 118022731 is about 10863.8267198994. The cubic root of 118022731 is about 490.5183062030.

The spelling of 118022731 in words is "one hundred eighteen million, twenty-two thousand, seven hundred thirty-one".