122431407 has 16 divisors (see below), whose sum is σ = 186892800. Its totient is φ = 69836832.

The previous prime is 122431403. The next prime is 122431427. The reversal of 122431407 is 704134221.

It is a happy number.

It is not a de Polignac number, because 122431407 - 2² = 122431403 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122431403) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7713 + ... + 17445.

It is an arithmetic number, because the mean of its divisors is an integer number (11680800).

Almost surely, 2^122431407 is an apocalyptic number.

122431407 is a deficient number, since it is larger than the sum of its proper divisors (64461393).

122431407 is an equidigital number, since it uses as much as digits as its factorization.

122431407 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10342.

The product of its (nonzero) digits is 1344, while the sum is 24.

The square root of 122431407 is about 11064.8726608127. The cubic root of 122431407 is about 496.5514794261.

Adding to 122431407 its reverse (704134221), we get a palindrome (826565628).

The spelling of 122431407 in words is "one hundred twenty-two million, four hundred thirty-one thousand, four hundred seven".