230221507 has 2 divisors, whose sum is σ = 230221508. Its totient is φ = 230221506.

The previous prime is 230221501. The next prime is 230221577. The reversal of 230221507 is 705122032.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-230221507 is a prime.

It is not a weakly prime, because it can be changed into another prime (230221501) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115110753 + 115110754.

It is an arithmetic number, because the mean of its divisors is an integer number (115110754).

Almost surely, 2^230221507 is an apocalyptic number.

230221507 is a deficient number, since it is larger than the sum of its proper divisors (1).

230221507 is an equidigital number, since it uses as much as digits as its factorization.

230221507 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 840, while the sum is 22.

The square root of 230221507 is about 15173.0520001745. The cubic root of 230221507 is about 612.8891938240.

Adding to 230221507 its reverse (705122032), we get a palindrome (935343539).

The spelling of 230221507 in words is "two hundred thirty million, two hundred twenty-one thousand, five hundred seven".