122431031 has 2 divisors, whose sum is σ = 122431032. Its totient is φ = 122431030.

The previous prime is 122430989. The next prime is 122431063. The reversal of 122431031 is 130134221.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 122431031 - 2⁶ = 122430967 is a prime.

It is a super-2 number, since 2×122431031² = 29978714703445922, 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 (122431531) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61215515 + 61215516.

It is an arithmetic number, because the mean of its divisors is an integer number (61215516).

Almost surely, 2^122431031 is an apocalyptic number.

122431031 is a deficient number, since it is larger than the sum of its proper divisors (1).

122431031 is an equidigital number, since it uses as much as digits as its factorization.

122431031 is an evil number, because the sum of its binary digits is even.

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

The square root of 122431031 is about 11064.8556700935. The cubic root of 122431031 is about 496.5509711046.

Adding to 122431031 its reverse (130134221), we get a palindrome (252565252).

The spelling of 122431031 in words is "one hundred twenty-two million, four hundred thirty-one thousand, thirty-one".