23321643 has 8 divisors (see below), whose sum is σ = 31682448. Its totient is φ = 15254304.

The previous prime is 23321621. The next prime is 23321653. The reversal of 23321643 is 34612332.

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

It is not a de Polignac number, because 23321643 - 2¹⁷ = 23190571 is a prime.

It is not an unprimeable number, because it can be changed into a prime (23321653) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 73180 + ... + 73497.

It is an arithmetic number, because the mean of its divisors is an integer number (3960306).

Almost surely, 2^23321643 is an apocalyptic number.

23321643 is a deficient number, since it is larger than the sum of its proper divisors (8360805).

23321643 is a wasteful number, since it uses less digits than its factorization.

23321643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 146733.

The product of its digits is 2592, while the sum is 24.

The square root of 23321643 is about 4829.2486993320. The cubic root of 23321643 is about 285.7062324992.

Adding to 23321643 its reverse (34612332), we get a palindrome (57933975).

The spelling of 23321643 in words is "twenty-three million, three hundred twenty-one thousand, six hundred forty-three".