20311000079 has 2 divisors, whose sum is σ = 20311000080. Its totient is φ = 20311000078.

The previous prime is 20311000067. The next prime is 20311000139. The reversal of 20311000079 is 97000011302.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20311000079 - 2¹² = 20310995983 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20311000579) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10155500039 + 10155500040.

It is an arithmetic number, because the mean of its divisors is an integer number (10155500040).

Almost surely, 2^20311000079 is an apocalyptic number.

20311000079 is a deficient number, since it is larger than the sum of its proper divisors (1).

20311000079 is an equidigital number, since it uses as much as digits as its factorization.

20311000079 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 378, while the sum is 23.

The spelling of 20311000079 in words is "twenty billion, three hundred eleven million, seventy-nine", and thus it is an aban number.