230121431 has 2 divisors, whose sum is σ = 230121432. Its totient is φ = 230121430.

The previous prime is 230121403. The next prime is 230121439. The reversal of 230121431 is 134121032.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-230121431 is a prime.

It is a super-2 number, since 2×230121431² = 105911746010975522, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (230121439) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115060715 + 115060716.

It is an arithmetic number, because the mean of its divisors is an integer number (115060716).

Almost surely, 2^230121431 is an apocalyptic number.

230121431 is a deficient number, since it is larger than the sum of its proper divisors (1).

230121431 is an equidigital number, since it uses as much as digits as its factorization.

230121431 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 17.

The square root of 230121431 is about 15169.7538213380. The cubic root of 230121431 is about 612.8003744527.

Adding to 230121431 its reverse (134121032), we get a palindrome (364242463).

It can be divided in two parts, 2301 and 21431, that added together give a palindrome (23732).

The spelling of 230121431 in words is "two hundred thirty million, one hundred twenty-one thousand, four hundred thirty-one".