118242731 has 2 divisors, whose sum is σ = 118242732. Its totient is φ = 118242730.

The previous prime is 118242727. The next prime is 118242763. The reversal of 118242731 is 137242811.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 118242731 - 2² = 118242727 is a prime.

It is a super-2 number, since 2×118242731² = 27962686868676722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 118242694 and 118242703.

It is not a weakly prime, because it can be changed into another prime (118242721) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 59121365 + 59121366.

It is an arithmetic number, because the mean of its divisors is an integer number (59121366).

Almost surely, 2^118242731 is an apocalyptic number.

118242731 is a deficient number, since it is larger than the sum of its proper divisors (1).

118242731 is an equidigital number, since it uses as much as digits as its factorization.

118242731 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2688, while the sum is 29.

The square root of 118242731 is about 10873.9473513531. The cubic root of 118242731 is about 490.8229001952.

The spelling of 118242731 in words is "one hundred eighteen million, two hundred forty-two thousand, seven hundred thirty-one".