23123655 has 48 divisors (see below), whose sum is σ = 42928704. Its totient is φ = 11473920.

The previous prime is 23123563. The next prime is 23123657. The reversal of 23123655 is 55632132.

23123655 = 479² + 480² + ... + 563².

23123655 is a `hidden beast` number, since 2 + 3 + 1 + 2 + 3 + 655 = 666.

It is not a de Polignac number, because 23123655 - 2⁹ = 23123143 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23123657) by changing a digit.

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 47 ways as a sum of consecutive naturals, for example, 127665 + ... + 127845.

It is an arithmetic number, because the mean of its divisors is an integer number (894348).

Almost surely, 2^23123655 is an apocalyptic number.

23123655 is a deficient number, since it is larger than the sum of its proper divisors (19805049).

23123655 is a wasteful number, since it uses less digits than its factorization.

23123655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 376 (or 373 counting only the distinct ones).

The product of its digits is 5400, while the sum is 27.

The square root of 23123655 is about 4808.7061669435. The cubic root of 23123655 is about 284.8954371729.

Adding to 23123655 its reverse (55632132), we get a palindrome (78755787).

The spelling of 23123655 in words is "twenty-three million, one hundred twenty-three thousand, six hundred fifty-five".