2002000311 has 6 divisors (see below), whose sum is σ = 2891778240.
Its totient is φ = 1334666868.
The previous prime is 2002000309. The next prime is 2002000313. The reversal of 2002000311 is 1130002002.
It is a happy number.
It is an interprime number because it is at equal distance from previous prime (2002000309) and next prime (2002000313).
It is not a de Polignac number, because 2002000311 - 21 = 2002000309 is a prime.
It is a Harshad number since it is a multiple of its sum of digits (9), and also a Moran number because the ratio is a prime number: 222444479 = 2002000311 / (2 + 0 + 0 + 2 + 0 + 0 + 0 + 3 + 1 + 1).
It is a junction number, because it is equal to n+sod(n) for n = 2002000293 and 2002000302.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (2002000313) by changing a digit.
It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 111222231 + ... + 111222248.
It is an arithmetic number, because the mean of its divisors is an integer number (481963040).
Almost surely, 22002000311 is an apocalyptic number.
2002000311 is a deficient number, since it is larger than the sum of its proper divisors (889777929).
2002000311 is a wasteful number, since it uses less digits than its factorization.
2002000311 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 222444485 (or 222444482 counting only the distinct ones).
The product of its (nonzero) digits is 12, while the sum is 9.
The square root of 2002000311 is about 44743.7181177425.
The cubic root of 2002000311 is about 1260.3409489271.
Adding to 2002000311 its reverse (1130002002), we get a palindrome (3132002313).
The spelling of 2002000311 in words is "two billion, two million, three hundred eleven", and thus it is an aban number.