31121101000039 has 2 divisors, whose sum is σ = 31121101000040. Its totient is φ = 31121101000038.

The previous prime is 31121100999973. The next prime is 31121101000091. The reversal of 31121101000039 is 93000010112113.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31121101000039 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 31121100999983 and 31121101000019.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31121101000739) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15560550500019 + 15560550500020.

It is an arithmetic number, because the mean of its divisors is an integer number (15560550500020).

Almost surely, 2^{31121101000039} is an apocalyptic number.

31121101000039 is a deficient number, since it is larger than the sum of its proper divisors (1).

31121101000039 is an equidigital number, since it uses as much as digits as its factorization.

31121101000039 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 162, while the sum is 22.

The spelling of 31121101000039 in words is "thirty-one trillion, one hundred twenty-one billion, one hundred one million, thirty-nine", and thus it is an aban number.