230432621 has 2 divisors, whose sum is σ = 230432622. Its totient is φ = 230432620.

The previous prime is 230432617. The next prime is 230432623. The reversal of 230432621 is 126234032.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 195160900 + 35271721 = 13970^2 + 5939^2 .

It is a cyclic number.

It is not a de Polignac number, because 230432621 - 2² = 230432617 is a prime.

Together with 230432623, 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 (230432623) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115216310 + 115216311.

It is an arithmetic number, because the mean of its divisors is an integer number (115216311).

Almost surely, 2^230432621 is an apocalyptic number.

It is an amenable number.

230432621 is a deficient number, since it is larger than the sum of its proper divisors (1).

230432621 is an equidigital number, since it uses as much as digits as its factorization.

230432621 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1728, while the sum is 23.

The square root of 230432621 is about 15180.0072793131. The cubic root of 230432621 is about 613.0764771652.

Adding to 230432621 its reverse (126234032), we get a palindrome (356666653).

The spelling of 230432621 in words is "two hundred thirty million, four hundred thirty-two thousand, six hundred twenty-one".