311009203061 has 2 divisors, whose sum is σ = 311009203062. Its totient is φ = 311009203060.

The previous prime is 311009203027. The next prime is 311009203103. The reversal of 311009203061 is 160302900113.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 307463596036 + 3545607025 = 554494^2 + 59545^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-311009203061 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 311009203061.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (311009205061) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 155504601530 + 155504601531.

It is an arithmetic number, because the mean of its divisors is an integer number (155504601531).

Almost surely, 2^311009203061 is an apocalyptic number.

It is an amenable number.

311009203061 is a deficient number, since it is larger than the sum of its proper divisors (1).

311009203061 is an equidigital number, since it uses as much as digits as its factorization.

311009203061 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 972, while the sum is 26.

The spelling of 311009203061 in words is "three hundred eleven billion, nine million, two hundred three thousand, sixty-one".