118230961 has 2 divisors, whose sum is σ = 118230962. Its totient is φ = 118230960.

The previous prime is 118230953. The next prime is 118230997. The reversal of 118230961 is 169032811.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 117852736 + 378225 = 10856^2 + 615^2 .

It is an emirp because it is prime and its reverse (169032811) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 118230961 - 2³ = 118230953 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (118230911) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 59115480 + 59115481.

It is an arithmetic number, because the mean of its divisors is an integer number (59115481).

Almost surely, 2^118230961 is an apocalyptic number.

It is an amenable number.

118230961 is a deficient number, since it is larger than the sum of its proper divisors (1).

118230961 is an equidigital number, since it uses as much as digits as its factorization.

118230961 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2592, while the sum is 31.

The square root of 118230961 is about 10873.4061360735. The cubic root of 118230961 is about 490.8066139869.

The spelling of 118230961 in words is "one hundred eighteen million, two hundred thirty thousand, nine hundred sixty-one".