23210421 has 8 divisors (see below), whose sum is σ = 33327840. Its totient is φ = 14283312.

The previous prime is 23210417. The next prime is 23210431. The reversal of 23210421 is 12401232.

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

It is not a de Polignac number, because 23210421 - 2² = 23210417 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 23210421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23210401) 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, 297531 + ... + 297608.

It is an arithmetic number, because the mean of its divisors is an integer number (4165980).

Almost surely, 2^23210421 is an apocalyptic number.

It is an amenable number.

23210421 is a deficient number, since it is larger than the sum of its proper divisors (10117419).

23210421 is a wasteful number, since it uses less digits than its factorization.

23210421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 595155.

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 23210421 is about 4817.7194812484. The cubic root of 23210421 is about 285.2513264720.

Adding to 23210421 its reverse (12401232), we get a palindrome (35611653).

The spelling of 23210421 in words is "twenty-three million, two hundred ten thousand, four hundred twenty-one".