118316257 has 4 divisors (see below), whose sum is σ = 119000340. Its totient is φ = 117632176.

The previous prime is 118316239. The next prime is 118316273. The reversal of 118316257 is 752613811.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 752613811 = 127 ⋅5926093.

It can be written as a sum of positive squares in 2 ways, for example, as 48944016 + 69372241 = 6996^2 + 8329^2 .

It is a cyclic number.

It is not a de Polignac number, because 118316257 - 2¹⁹ = 117791969 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (118316227) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 341782 + ... + 342127.

It is an arithmetic number, because the mean of its divisors is an integer number (29750085).

Almost surely, 2^118316257 is an apocalyptic number.

It is an amenable number.

118316257 is a deficient number, since it is larger than the sum of its proper divisors (684083).

118316257 is an equidigital number, since it uses as much as digits as its factorization.

118316257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 684082.

The product of its digits is 10080, while the sum is 34.

The square root of 118316257 is about 10877.3276589427. The cubic root of 118316257 is about 490.9246140361.

The spelling of 118316257 in words is "one hundred eighteen million, three hundred sixteen thousand, two hundred fifty-seven".