311853910009 has 4 divisors (see below), whose sum is σ = 313840240804. Its totient is φ = 309867579216.

The previous prime is 311853910003. The next prime is 311853910031. The reversal of 311853910009 is 900019358113.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 57235777600 + 254618132409 = 239240^2 + 504597^2 .

It is a cyclic number.

It is not a de Polignac number, because 311853910009 - 2³ = 311853910001 is a prime.

It is a super-2 number, since 2×311853910009² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (311853910001) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 993165162 + ... + 993165475.

It is an arithmetic number, because the mean of its divisors is an integer number (78460060201).

Almost surely, 2^311853910009 is an apocalyptic number.

It is an amenable number.

311853910009 is a deficient number, since it is larger than the sum of its proper divisors (1986330795).

311853910009 is a wasteful number, since it uses less digits than its factorization.

311853910009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1986330794.

The product of its (nonzero) digits is 29160, while the sum is 40.

The spelling of 311853910009 in words is "three hundred eleven billion, eight hundred fifty-three million, nine hundred ten thousand, nine".