311332021109 has 2 divisors, whose sum is σ = 311332021110. Its totient is φ = 311332021108.

The previous prime is 311332021079. The next prime is 311332021129. The reversal of 311332021109 is 901120233113.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 311302623025 + 29398084 = 557945^2 + 5422^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-311332021109 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (311332021129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 155666010554 + 155666010555.

It is an arithmetic number, because the mean of its divisors is an integer number (155666010555).

Almost surely, 2^311332021109 is an apocalyptic number.

It is an amenable number.

311332021109 is a deficient number, since it is larger than the sum of its proper divisors (1).

311332021109 is an equidigital number, since it uses as much as digits as its factorization.

311332021109 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 311332021109 in words is "three hundred eleven billion, three hundred thirty-two million, twenty-one thousand, one hundred nine".