122431305 has 16 divisors (see below), whose sum is σ = 196087680. Its totient is φ = 65230848.

The previous prime is 122431303. The next prime is 122431321. The reversal of 122431305 is 503134221.

It is not a de Polignac number, because 122431305 - 2¹ = 122431303 is a prime.

It is not an unprimeable number, because it can be changed into a prime (122431303) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13756 + ... + 20834.

It is an arithmetic number, because the mean of its divisors is an integer number (12255480).

Almost surely, 2^122431305 is an apocalyptic number.

122431305 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

122431305 is a deficient number, since it is larger than the sum of its proper divisors (73656375).

122431305 is a wasteful number, since it uses less digits than its factorization.

122431305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8240.

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 122431305 is about 11064.8680516308. The cubic root of 122431305 is about 496.5513415305.

Adding to 122431305 its reverse (503134221), we get a palindrome (625565526).

The spelling of 122431305 in words is "one hundred twenty-two million, four hundred thirty-one thousand, three hundred five".