31224234421129 has 2 divisors, whose sum is σ = 31224234421130. Its totient is φ = 31224234421128.

The previous prime is 31224234421109. The next prime is 31224234421151. The reversal of 31224234421129 is 92112443242213.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20362114753600 + 10862119667529 = 4512440^2 + 3295773^2 .

It is a cyclic number.

It is not a de Polignac number, because 31224234421129 - 2⁴³ = 22428141398921 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 31224234421091 and 31224234421100.

It is not a weakly prime, because it can be changed into another prime (31224234421109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15612117210564 + 15612117210565.

It is an arithmetic number, because the mean of its divisors is an integer number (15612117210565).

Almost surely, 2^{31224234421129} is an apocalyptic number.

It is an amenable number.

31224234421129 is a deficient number, since it is larger than the sum of its proper divisors (1).

31224234421129 is an equidigital number, since it uses as much as digits as its factorization.

31224234421129 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 165888, while the sum is 40.

The spelling of 31224234421129 in words is "thirty-one trillion, two hundred twenty-four billion, two hundred thirty-four million, four hundred twenty-one thousand, one hundred twenty-nine".