233023031221 has 4 divisors (see below), whose sum is σ = 233054279200. Its totient is φ = 232991783244.

The previous prime is 233023031207. The next prime is 233023031233. The reversal of 233023031221 is 122130320332.

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 233023031221 - 2¹³ = 233023023029 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 233023031192 and 233023031201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (233023031201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15612801 + ... + 15627718.

It is an arithmetic number, because the mean of its divisors is an integer number (58263569800).

Almost surely, 2^233023031221 is an apocalyptic number.

It is an amenable number.

233023031221 is a deficient number, since it is larger than the sum of its proper divisors (31247979).

233023031221 is an equidigital number, since it uses as much as digits as its factorization.

233023031221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31247978.

The product of its (nonzero) digits is 1296, while the sum is 22.

Adding to 233023031221 its reverse (122130320332), we get a palindrome (355153351553).

The spelling of 233023031221 in words is "two hundred thirty-three billion, twenty-three million, thirty-one thousand, two hundred twenty-one".