118243321 has 12 divisors (see below), whose sum is σ = 137822580. Its totient is φ = 101149440.

The previous prime is 118243277. The next prime is 118243337. The reversal of 118243321 is 123342811.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 76317696 + 41925625 = 8736^2 + 6475^2 .

It is not a de Polignac number, because 118243321 - 2¹³ = 118235129 is a prime.

It is a super-2 number, since 2×118243321² = 27962965922218082, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (118243361) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 25761 + ... + 30001.

It is an arithmetic number, because the mean of its divisors is an integer number (11485215).

Almost surely, 2^118243321 is an apocalyptic number.

It is an amenable number.

118243321 is a deficient number, since it is larger than the sum of its proper divisors (19579259).

118243321 is an equidigital number, since it uses as much as digits as its factorization.

118243321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4824 (or 4817 counting only the distinct ones).

The product of its digits is 1152, while the sum is 25.

The square root of 118243321 is about 10873.9744803820. The cubic root of 118243321 is about 490.8237165527.

The spelling of 118243321 in words is "one hundred eighteen million, two hundred forty-three thousand, three hundred twenty-one".