311321302069 has 2 divisors, whose sum is σ = 311321302070. Its totient is φ = 311321302068.

The previous prime is 311321301979. The next prime is 311321302081. The reversal of 311321302069 is 960203123113.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 307242947025 + 4078355044 = 554295^2 + 63862^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-311321302069 is a prime.

It is a super-2 number, since 2×311321302069² (a number of 24 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 311321302069.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (311321302969) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 155660651034 + 155660651035.

It is an arithmetic number, because the mean of its divisors is an integer number (155660651035).

Almost surely, 2^311321302069 is an apocalyptic number.

It is an amenable number.

311321302069 is a deficient number, since it is larger than the sum of its proper divisors (1).

311321302069 is an equidigital number, since it uses as much as digits as its factorization.

311321302069 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5832, while the sum is 31.

The spelling of 311321302069 in words is "three hundred eleven billion, three hundred twenty-one million, three hundred two thousand, sixty-nine".