122431431 has 32 divisors (see below), whose sum is σ = 175011840. Its totient is φ = 76003200.

The previous prime is 122431427. The next prime is 122431447. The reversal of 122431431 is 134134221.

It is not a de Polignac number, because 122431431 - 2² = 122431427 is a prime.

It is a super-2 number, since 2×122431431² = 29978910593415522, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 122431398 and 122431407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122431031) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 290601 + ... + 291021.

It is an arithmetic number, because the mean of its divisors is an integer number (5469120).

Almost surely, 2^122431431 is an apocalyptic number.

122431431 is a deficient number, since it is larger than the sum of its proper divisors (52580409).

122431431 is a wasteful number, since it uses less digits than its factorization.

122431431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 567.

The product of its digits is 576, while the sum is 21.

The square root of 122431431 is about 11064.8737453258. The cubic root of 122431431 is about 496.5515118721.

Adding to 122431431 its reverse (134134221), we get a palindrome (256565652).

The spelling of 122431431 in words is "one hundred twenty-two million, four hundred thirty-one thousand, four hundred thirty-one".