118398031 has 2 divisors, whose sum is σ = 118398032. Its totient is φ = 118398030.

The previous prime is 118398017. The next prime is 118398041. The reversal of 118398031 is 130893811.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 118398031 - 2⁵ = 118397999 is a prime.

It is a super-2 number, since 2×118398031² = 28036187489353922, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (118398001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 59199015 + 59199016.

It is an arithmetic number, because the mean of its divisors is an integer number (59199016).

Almost surely, 2^118398031 is an apocalyptic number.

118398031 is a deficient number, since it is larger than the sum of its proper divisors (1).

118398031 is an equidigital number, since it uses as much as digits as its factorization.

118398031 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5184, while the sum is 34.

The square root of 118398031 is about 10881.0859292628. The cubic root of 118398031 is about 491.0376884500.

The spelling of 118398031 in words is "one hundred eighteen million, three hundred ninety-eight thousand, thirty-one".