311220000001 has 4 divisors (see below), whose sum is σ = 311242131904. Its totient is φ = 311197868100.

The previous prime is 311219999989. The next prime is 311220000023. The reversal of 311220000001 is 100000022113.

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.

It is a cyclic number.

It is not a de Polignac number, because 311220000001 - 2¹³ = 311219991809 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (311220000041) 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, 11044845 + ... + 11072986.

It is an arithmetic number, because the mean of its divisors is an integer number (77810532976).

Almost surely, 2^311220000001 is an apocalyptic number.

It is an amenable number.

311220000001 is a deficient number, since it is larger than the sum of its proper divisors (22131903).

311220000001 is a wasteful number, since it uses less digits than its factorization.

311220000001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22131902.

The product of its (nonzero) digits is 12, while the sum is 10.

Adding to 311220000001 its reverse (100000022113), we get a palindrome (411220022114).

The spelling of 311220000001 in words is "three hundred eleven billion, two hundred twenty million, one", and thus it is an aban number.