23032921 has 4 divisors (see below), whose sum is σ = 24245200. Its totient is φ = 21820644.

The previous prime is 23032901. The next prime is 23032937. The reversal of 23032921 is 12923032.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 23032921 - 2¹¹ = 23030873 is a prime.

It is a super-3 number, since 3×23032921³ (a number of 23 digits) contains 333 as substring.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 23032892 and 23032901.

It is not an unprimeable number, because it can be changed into a prime (23032901) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 606111 + ... + 606148.

It is an arithmetic number, because the mean of its divisors is an integer number (6061300).

Almost surely, 2^23032921 is an apocalyptic number.

It is an amenable number.

23032921 is a deficient number, since it is larger than the sum of its proper divisors (1212279).

23032921 is a wasteful number, since it uses less digits than its factorization.

23032921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1212278.

The product of its (nonzero) digits is 648, while the sum is 22.

The square root of 23032921 is about 4799.2625475171. The cubic root of 23032921 is about 284.5223187262.

Adding to 23032921 its reverse (12923032), we get a palindrome (35955953).

The spelling of 23032921 in words is "twenty-three million, thirty-two thousand, nine hundred twenty-one".