118312087 has 2 divisors, whose sum is σ = 118312088. Its totient is φ = 118312086.

The previous prime is 118312063. The next prime is 118312111. The reversal of 118312087 is 780213811.

It is a happy number.

It is a balanced prime because it is at equal distance from previous prime (118312063) and next prime (118312111).

It is a cyclic number.

It is not a de Polignac number, because 118312087 - 2¹¹ = 118310039 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (118312787) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 59156043 + 59156044.

It is an arithmetic number, because the mean of its divisors is an integer number (59156044).

Almost surely, 2^118312087 is an apocalyptic number.

118312087 is a deficient number, since it is larger than the sum of its proper divisors (1).

118312087 is an equidigital number, since it uses as much as digits as its factorization.

118312087 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2688, while the sum is 31.

The square root of 118312087 is about 10877.1359741432. The cubic root of 118312087 is about 490.9188465004.

Adding to 118312087 its reverse (780213811), we get a palindrome (898525898).

The spelling of 118312087 in words is "one hundred eighteen million, three hundred twelve thousand, eighty-seven".