118681243 has 2 divisors, whose sum is σ = 118681244. Its totient is φ = 118681242.

The previous prime is 118681231. The next prime is 118681249. The reversal of 118681243 is 342186811.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-118681243 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 118681199 and 118681208.

It is not a weakly prime, because it can be changed into another prime (118681249) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 59340621 + 59340622.

It is an arithmetic number, because the mean of its divisors is an integer number (59340622).

Almost surely, 2^118681243 is an apocalyptic number.

118681243 is a deficient number, since it is larger than the sum of its proper divisors (1).

118681243 is an equidigital number, since it uses as much as digits as its factorization.

118681243 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9216, while the sum is 34.

The square root of 118681243 is about 10894.0921145362. The cubic root of 118681243 is about 491.4289028052.

The spelling of 118681243 in words is "one hundred eighteen million, six hundred eighty-one thousand, two hundred forty-three".