118230731 has 2 divisors, whose sum is σ = 118230732. Its totient is φ = 118230730.

The previous prime is 118230703. The next prime is 118230737. The reversal of 118230731 is 137032811.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 118230731 - 2⁶ = 118230667 is a prime.

It is a super-2 number, since 2×118230731² = 27957011505588722, which contains 22 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 118230731.

It is not a weakly prime, because it can be changed into another prime (118230737) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 59115365 + 59115366.

It is an arithmetic number, because the mean of its divisors is an integer number (59115366).

Almost surely, 2^118230731 is an apocalyptic number.

118230731 is a deficient number, since it is larger than the sum of its proper divisors (1).

118230731 is an equidigital number, since it uses as much as digits as its factorization.

118230731 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1008, while the sum is 26.

The square root of 118230731 is about 10873.3955598056. The cubic root of 118230731 is about 490.8062957240.

It can be divided in two parts, 1182 and 30731, that added together give a palindrome (31913).

The spelling of 118230731 in words is "one hundred eighteen million, two hundred thirty thousand, seven hundred thirty-one".