232313021 has 2 divisors, whose sum is σ = 232313022. Its totient is φ = 232313020.

The previous prime is 232312999. The next prime is 232313023. The reversal of 232313021 is 120313232.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 142802500 + 89510521 = 11950^2 + 9461^2 .

It is a cyclic number.

It is not a de Polignac number, because 232313021 - 2¹⁸ = 232050877 is a prime.

It is a super-2 number, since 2×232313021² = 107938679452292882, which contains 22 as substring.

Together with 232313023, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (232313023) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 116156510 + 116156511.

It is an arithmetic number, because the mean of its divisors is an integer number (116156511).

Almost surely, 2^232313021 is an apocalyptic number.

It is an amenable number.

232313021 is a deficient number, since it is larger than the sum of its proper divisors (1).

232313021 is an equidigital number, since it uses as much as digits as its factorization.

232313021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 216, while the sum is 17.

The square root of 232313021 is about 15241.8181658226. The cubic root of 232313021 is about 614.7395914278.

Adding to 232313021 its reverse (120313232), we get a palindrome (352626253).

The spelling of 232313021 in words is "two hundred thirty-two million, three hundred thirteen thousand, twenty-one".