230440621 has 2 divisors, whose sum is σ = 230440622. Its totient is φ = 230440620.

The previous prime is 230440603. The next prime is 230440643. The reversal of 230440621 is 126044032.

It is a happy number.

It is an a-pointer prime, because the next prime (230440643) can be obtained adding 230440621 to its sum of digits (22).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 210540100 + 19900521 = 14510^2 + 4461^2 .

It is a cyclic number.

It is not a de Polignac number, because 230440621 - 2⁵ = 230440589 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 230440592 and 230440601.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (230440601) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115220310 + 115220311.

It is an arithmetic number, because the mean of its divisors is an integer number (115220311).

Almost surely, 2^230440621 is an apocalyptic number.

It is an amenable number.

230440621 is a deficient number, since it is larger than the sum of its proper divisors (1).

230440621 is an equidigital number, since it uses as much as digits as its factorization.

230440621 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1152, while the sum is 22.

The square root of 230440621 is about 15180.2707815111. The cubic root of 230440621 is about 613.0835718712.

Adding to 230440621 its reverse (126044032), we get a palindrome (356484653).

The spelling of 230440621 in words is "two hundred thirty million, four hundred forty thousand, six hundred twenty-one".