31123023321029 has 2 divisors, whose sum is σ = 31123023321030. Its totient is φ = 31123023321028.

The previous prime is 31123023320969. The next prime is 31123023321077. The reversal of 31123023321029 is 92012332032113.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 28960520724004 + 2162502597025 = 5381498^2 + 1470545^2 .

It is a cyclic number.

It is not a de Polignac number, because 31123023321029 - 2⁸ = 31123023320773 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 31123023320986 and 31123023321004.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31123023321079) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15561511660514 + 15561511660515.

It is an arithmetic number, because the mean of its divisors is an integer number (15561511660515).

Almost surely, 2^{31123023321029} is an apocalyptic number.

It is an amenable number.

31123023321029 is a deficient number, since it is larger than the sum of its proper divisors (1).

31123023321029 is an equidigital number, since it uses as much as digits as its factorization.

31123023321029 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11664, while the sum is 32.

The spelling of 31123023321029 in words is "thirty-one trillion, one hundred twenty-three billion, twenty-three million, three hundred twenty-one thousand, twenty-nine".