118320511 has 4 divisors (see below), whose sum is σ = 118342872. Its totient is φ = 118298152.

The previous prime is 118320509. The next prime is 118320557. The reversal of 118320511 is 115023811.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 115023811 = 7 ⋅16431973.

It is a cyclic number.

It is not a de Polignac number, because 118320511 - 2¹ = 118320509 is a prime.

It is a super-2 number, since 2×118320511² = 27999486646602242, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (118320911) 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, 1716 + ... + 15478.

It is an arithmetic number, because the mean of its divisors is an integer number (29585718).

Almost surely, 2^118320511 is an apocalyptic number.

118320511 is a deficient number, since it is larger than the sum of its proper divisors (22361).

118320511 is an equidigital number, since it uses as much as digits as its factorization.

118320511 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22360.

The product of its (nonzero) digits is 240, while the sum is 22.

The square root of 118320511 is about 10877.5232015381. The cubic root of 118320511 is about 490.9304976127.

The spelling of 118320511 in words is "one hundred eighteen million, three hundred twenty thousand, five hundred eleven".