118711231 has 2 divisors, whose sum is σ = 118711232. Its totient is φ = 118711230.

The previous prime is 118711193. The next prime is 118711247. The reversal of 118711231 is 132117811.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 118711231 - 2⁹ = 118710719 is a prime.

It is a super-2 number, since 2×118711231² = 28184712731070722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 118711196 and 118711205.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (118711291) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 59355615 + 59355616.

It is an arithmetic number, because the mean of its divisors is an integer number (59355616).

Almost surely, 2^118711231 is an apocalyptic number.

118711231 is a deficient number, since it is larger than the sum of its proper divisors (1).

118711231 is an equidigital number, since it uses as much as digits as its factorization.

118711231 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 336, while the sum is 25.

The square root of 118711231 is about 10895.4683699233. The cubic root of 118711231 is about 491.4702902183.

The spelling of 118711231 in words is "one hundred eighteen million, seven hundred eleven thousand, two hundred thirty-one".