118931 has 2 divisors, whose sum is σ = 118932. Its totient is φ = 118930.

The previous prime is 118927. The next prime is 118967. The reversal of 118931 is 139811.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 118931 - 2² = 118927 is a prime.

It is a super-2 number, since 2×118931² = 28289165522, which contains 22 as substring.

It is a Chen prime.

It is a plaindrome in base 12.

It is a junction number, because it is equal to n+sod(n) for n = 118897 and 118906.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 118931.

It is not a weakly prime, because it can be changed into another prime (118901) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 59465 + 59466.

It is an arithmetic number, because the mean of its divisors is an integer number (59466).

2¹¹⁸⁹³¹ is an apocalyptic number.

118931 is a deficient number, since it is larger than the sum of its proper divisors (1).

118931 is an equidigital number, since it uses as much as digits as its factorization.

118931 is an evil number, because the sum of its binary digits is even.

The product of its digits is 216, while the sum is 23.

The square root of 118931 is about 344.8637412080. The cubic root of 118931 is about 49.1773388050.

The spelling of 118931 in words is "one hundred eighteen thousand, nine hundred thirty-one".