23421355 has 8 divisors (see below), whose sum is σ = 28444752. Its totient is φ = 18511008.

The previous prime is 23421353. The next prime is 23421371. The reversal of 23421355 is 55312432.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 23421355 - 2¹ = 23421353 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23421353) 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 7 ways as a sum of consecutive naturals, for example, 27804 + ... + 28633.

It is an arithmetic number, because the mean of its divisors is an integer number (3555594).

Almost surely, 2^23421355 is an apocalyptic number.

23421355 is a deficient number, since it is larger than the sum of its proper divisors (5023397).

23421355 is an equidigital number, since it uses as much as digits as its factorization.

23421355 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56525.

The product of its digits is 3600, while the sum is 25.

The square root of 23421355 is about 4839.5614470735. The cubic root of 23421355 is about 286.1128338588.

Adding to 23421355 its reverse (55312432), we get a palindrome (78733787).

The spelling of 23421355 in words is "twenty-three million, four hundred twenty-one thousand, three hundred fifty-five".