23231033321 has 4 divisors (see below), whose sum is σ = 24241078272. Its totient is φ = 22220988372.

The previous prime is 23231033281. The next prime is 23231033369. The reversal of 23231033321 is 12333013232.

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 23231033321 - 2⁶ = 23231033257 is a prime.

It is a super-2 number, since 2×23231033321² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (23), and also a Moran number because the ratio is a prime number: 1010044927 = 23231033321 / (2 + 3 + 2 + 3 + 1 + 0 + 3 + 3 + 3 + 2 + 1).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23231033521) 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, 505022441 + ... + 505022486.

It is an arithmetic number, because the mean of its divisors is an integer number (6060269568).

Almost surely, 2^23231033321 is an apocalyptic number.

It is an amenable number.

23231033321 is a deficient number, since it is larger than the sum of its proper divisors (1010044951).

23231033321 is a wasteful number, since it uses less digits than its factorization.

23231033321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1010044950.

The product of its (nonzero) digits is 1944, while the sum is 23.

Adding to 23231033321 its reverse (12333013232), we get a palindrome (35564046553).

The spelling of 23231033321 in words is "twenty-three billion, two hundred thirty-one million, thirty-three thousand, three hundred twenty-one".