230121403 has 2 divisors, whose sum is σ = 230121404. Its totient is φ = 230121402.

The previous prime is 230121379. The next prime is 230121431. The reversal of 230121403 is 304121032.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 230121403 - 2¹³ = 230113211 is a prime.

It is not a weakly prime, because it can be changed into another prime (230121443) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115060701 + 115060702.

It is an arithmetic number, because the mean of its divisors is an integer number (115060702).

Almost surely, 2^230121403 is an apocalyptic number.

230121403 is a deficient number, since it is larger than the sum of its proper divisors (1).

230121403 is an equidigital number, since it uses as much as digits as its factorization.

230121403 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 230121403 is about 15169.7528984489. The cubic root of 230121403 is about 612.8003495986.

Adding to 230121403 its reverse (304121032), we get a palindrome (534242435).

The spelling of 230121403 in words is "two hundred thirty million, one hundred twenty-one thousand, four hundred three".