23381055 has 20 divisors (see below), whose sum is σ = 41913432. Its totient is φ = 12469680.

The previous prime is 23381023. The next prime is 23381063. The reversal of 23381055 is 55018332.

It is not a de Polignac number, because 23381055 - 2⁵ = 23381023 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 28461 + ... + 29270.

Almost surely, 2^23381055 is an apocalyptic number.

23381055 is a deficient number, since it is larger than the sum of its proper divisors (18532377).

23381055 is an equidigital number, since it uses as much as digits as its factorization.

23381055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57748 (or 57739 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 27.

The square root of 23381055 is about 4835.3960540994. The cubic root of 23381055 is about 285.9486394478.

Adding to 23381055 its reverse (55018332), we get a palindrome (78399387).

The spelling of 23381055 in words is "twenty-three million, three hundred eighty-one thousand, fifty-five".