311320009 has 16 divisors (see below), whose sum is σ = 417997440. Its totient is φ = 223925760.

The previous prime is 311320007. The next prime is 311320013. The reversal of 311320009 is 900023113.

It is a cyclic number.

It is not a de Polignac number, because 311320009 - 2¹ = 311320007 is a prime.

It is not an unprimeable number, because it can be changed into a prime (311320003) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 154504 + ... + 156505.

It is an arithmetic number, because the mean of its divisors is an integer number (26124840).

Almost surely, 2^311320009 is an apocalyptic number.

It is an amenable number.

311320009 is a deficient number, since it is larger than the sum of its proper divisors (106677431).

311320009 is a wasteful number, since it uses less digits than its factorization.

311320009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 311040.

The product of its (nonzero) digits is 162, while the sum is 19.

The square root of 311320009 is about 17644.2627785918. The cubic root of 311320009 is about 677.7491966020.

The spelling of 311320009 in words is "three hundred eleven million, three hundred twenty thousand, nine".