311232022009 has 2 divisors, whose sum is σ = 311232022010. Its totient is φ = 311232022008.

The previous prime is 311232021937. The next prime is 311232022093. The reversal of 311232022009 is 900220232113.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 164349160000 + 146882862009 = 405400^2 + 383253^2 .

It is an emirp because it is prime and its reverse (900220232113) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 311232022009 - 2¹¹ = 311232019961 is a prime.

It is not a weakly prime, because it can be changed into another prime (311232002009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 155616011004 + 155616011005.

It is an arithmetic number, because the mean of its divisors is an integer number (155616011005).

Almost surely, 2^311232022009 is an apocalyptic number.

It is an amenable number.

311232022009 is a deficient number, since it is larger than the sum of its proper divisors (1).

311232022009 is an equidigital number, since it uses as much as digits as its factorization.

311232022009 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1296, while the sum is 25.

The spelling of 311232022009 in words is "three hundred eleven billion, two hundred thirty-two million, twenty-two thousand, nine".