118678531 has 2 divisors, whose sum is σ = 118678532. Its totient is φ = 118678530.

The previous prime is 118678523. The next prime is 118678537. The reversal of 118678531 is 135876811.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 118678531 - 2³ = 118678523 is a prime.

It is a super-2 number, since 2×118678531² = 28169187440635922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (118678537) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 59339265 + 59339266.

It is an arithmetic number, because the mean of its divisors is an integer number (59339266).

Almost surely, 2^118678531 is an apocalyptic number.

118678531 is a deficient number, since it is larger than the sum of its proper divisors (1).

118678531 is an equidigital number, since it uses as much as digits as its factorization.

118678531 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 40320, while the sum is 40.

The square root of 118678531 is about 10893.9676426911. The cubic root of 118678531 is about 491.4251595421.

The spelling of 118678531 in words is "one hundred eighteen million, six hundred seventy-eight thousand, five hundred thirty-one".