121431230 has 16 divisors (see below), whose sum is σ = 218741040. Its totient is φ = 48535872.

The previous prime is 121431203. The next prime is 121431239. The reversal of 121431230 is 32134121.

It is a junction number, because it is equal to n+sod(n) for n = 121431199 and 121431208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121431239) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12317 + ... + 19863.

It is an arithmetic number, because the mean of its divisors is an integer number (13671315).

Almost surely, 2^121431230 is an apocalyptic number.

121431230 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121431230 is a deficient number, since it is larger than the sum of its proper divisors (97309810).

121431230 is a wasteful number, since it uses less digits than its factorization.

121431230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9163.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 121431230 is about 11019.5839304395. The cubic root of 121431230 is about 495.1956237983.

Adding to 121431230 its reverse (32134121), we get a palindrome (153565351).

The spelling of 121431230 in words is "one hundred twenty-one million, four hundred thirty-one thousand, two hundred thirty".