233030231021 has 4 divisors (see below), whose sum is σ = 266320264032. Its totient is φ = 199740198012.

The previous prime is 233030231017. The next prime is 233030231023. The reversal of 233030231021 is 120132030332.

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 233030231021 - 2² = 233030231017 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 233030230984 and 233030231002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (233030231023) 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, 16645016495 + ... + 16645016508.

It is an arithmetic number, because the mean of its divisors is an integer number (66580066008).

Almost surely, 2^233030231021 is an apocalyptic number.

It is an amenable number.

233030231021 is a deficient number, since it is larger than the sum of its proper divisors (33290033011).

233030231021 is an equidigital number, since it uses as much as digits as its factorization.

233030231021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33290033010.

The product of its (nonzero) digits is 648, while the sum is 20.

Adding to 233030231021 its reverse (120132030332), we get a palindrome (353162261353).

The spelling of 233030231021 in words is "two hundred thirty-three billion, thirty million, two hundred thirty-one thousand, twenty-one".