230311021 has 4 divisors (see below), whose sum is σ = 230467392. Its totient is φ = 230154652.

The previous prime is 230311009. The next prime is 230311031. The reversal of 230311021 is 120113032.

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 230311021 - 2¹⁵ = 230278253 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 230310992 and 230311010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (230311001) 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, 75955 + ... + 78928.

It is an arithmetic number, because the mean of its divisors is an integer number (57616848).

Almost surely, 2^230311021 is an apocalyptic number.

It is an amenable number.

230311021 is a deficient number, since it is larger than the sum of its proper divisors (156371).

230311021 is a wasteful number, since it uses less digits than its factorization.

230311021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 156370.

The product of its (nonzero) digits is 36, while the sum is 13.

The square root of 230311021 is about 15176.0014826040. The cubic root of 230311021 is about 612.9686174120.

Adding to 230311021 its reverse (120113032), we get a palindrome (350424053).

The spelling of 230311021 in words is "two hundred thirty million, three hundred eleven thousand, twenty-one".