31226123429 has 2 divisors, whose sum is σ = 31226123430. Its totient is φ = 31226123428.

The previous prime is 31226123419. The next prime is 31226123459. The reversal of 31226123429 is 92432162213.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 31222183204 + 3940225 = 176698^2 + 1985^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31226123429 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31226123419) 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 as a sum of consecutive naturals, namely, 15613061714 + 15613061715.

It is an arithmetic number, because the mean of its divisors is an integer number (15613061715).

Almost surely, 2^31226123429 is an apocalyptic number.

It is an amenable number.

31226123429 is a deficient number, since it is larger than the sum of its proper divisors (1).

31226123429 is an equidigital number, since it uses as much as digits as its factorization.

31226123429 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 31104, while the sum is 35.

The spelling of 31226123429 in words is "thirty-one billion, two hundred twenty-six million, one hundred twenty-three thousand, four hundred twenty-nine".