118121383 has 4 divisors (see below), whose sum is σ = 118153840. Its totient is φ = 118088928.

The previous prime is 118121359. The next prime is 118121401. The reversal of 118121383 is 383121811.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 383121811 = 109 ⋅3514879.

It is a cyclic number.

It is not a de Polignac number, because 118121383 - 2²¹ = 116024231 is a prime.

It is a super-2 number, since 2×118121383² = 27905322243665378, 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 (118121323) 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, 9963 + ... + 18316.

It is an arithmetic number, because the mean of its divisors is an integer number (29538460).

Almost surely, 2^118121383 is an apocalyptic number.

118121383 is a deficient number, since it is larger than the sum of its proper divisors (32457).

118121383 is an equidigital number, since it uses as much as digits as its factorization.

118121383 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32456.

The product of its digits is 1152, while the sum is 28.

The square root of 118121383 is about 10868.3661605597. The cubic root of 118121383 is about 490.6549384573.

The spelling of 118121383 in words is "one hundred eighteen million, one hundred twenty-one thousand, three hundred eighty-three".