3111368809 has 4 divisors (see below), whose sum is σ = 3135867904. Its totient is φ = 3086869716.

The previous prime is 3111368801. The next prime is 3111368837. The reversal of 3111368809 is 9088631113.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 9088631113 = 66467 ⋅136739.

It is a cyclic number.

It is not a de Polignac number, because 3111368809 - 2³ = 3111368801 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3111368801) 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, 12249357 + ... + 12249610.

It is an arithmetic number, because the mean of its divisors is an integer number (783966976).

Almost surely, 2^3111368809 is an apocalyptic number.

It is an amenable number.

3111368809 is a deficient number, since it is larger than the sum of its proper divisors (24499095).

3111368809 is a wasteful number, since it uses less digits than its factorization.

3111368809 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24499094.

The product of its (nonzero) digits is 31104, while the sum is 40.

The square root of 3111368809 is about 55779.6451136075. The cubic root of 3111368809 is about 1459.8800190701.

The spelling of 3111368809 in words is "three billion, one hundred eleven million, three hundred sixty-eight thousand, eight hundred nine".