31311012143329 has 2 divisors, whose sum is σ = 31311012143330. Its totient is φ = 31311012143328.

The previous prime is 31311012143297. The next prime is 31311012143339. The reversal of 31311012143329 is 92334121011313.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 31227722183329 + 83289960000 = 5588177^2 + 288600^2 .

It is a cyclic number.

It is not a de Polignac number, because 31311012143329 - 2⁵ = 31311012143297 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 31311012143294 and 31311012143303.

It is not a weakly prime, because it can be changed into another prime (31311012143339) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15655506071664 + 15655506071665.

It is an arithmetic number, because the mean of its divisors is an integer number (15655506071665).

Almost surely, 2^{31311012143329} is an apocalyptic number.

It is an amenable number.

31311012143329 is a deficient number, since it is larger than the sum of its proper divisors (1).

31311012143329 is an equidigital number, since it uses as much as digits as its factorization.

31311012143329 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11664, while the sum is 34.

The spelling of 31311012143329 in words is "thirty-one trillion, three hundred eleven billion, twelve million, one hundred forty-three thousand, three hundred twenty-nine".