230121523 has 2 divisors, whose sum is σ = 230121524. Its totient is φ = 230121522.

The previous prime is 230121511. The next prime is 230121613. The reversal of 230121523 is 325121032.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-230121523 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 230121523.

It is not a weakly prime, because it can be changed into another prime (230121323) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115060761 + 115060762.

It is an arithmetic number, because the mean of its divisors is an integer number (115060762).

Almost surely, 2^230121523 is an apocalyptic number.

230121523 is a deficient number, since it is larger than the sum of its proper divisors (1).

230121523 is an equidigital number, since it uses as much as digits as its factorization.

230121523 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 360, while the sum is 19.

The square root of 230121523 is about 15169.7568536875. The cubic root of 230121523 is about 612.8004561163.

Adding to 230121523 its reverse (325121032), we get a palindrome (555242555).

The spelling of 230121523 in words is "two hundred thirty million, one hundred twenty-one thousand, five hundred twenty-three".