2002031311 has 16 divisors (see below), whose sum is σ = 2430984960. Its totient is φ = 1610504640.

The previous prime is 2002031303. The next prime is 2002031329. The reversal of 2002031311 is 1131302002.

It is a cyclic number.

It is not a de Polignac number, because 2002031311 - 2³ = 2002031303 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2002031291 and 2002031300.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2002031371) 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, 56110 + ... + 84571.

It is an arithmetic number, because the mean of its divisors is an integer number (151936560).

Almost surely, 2^2002031311 is an apocalyptic number.

2002031311 is a deficient number, since it is larger than the sum of its proper divisors (428953649).

2002031311 is a wasteful number, since it uses less digits than its factorization.

2002031311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140814.

The product of its (nonzero) digits is 36, while the sum is 13.

The square root of 2002031311 is about 44744.0645337457. The cubic root of 2002031311 is about 1260.3474541488.

Adding to 2002031311 its reverse (1131302002), we get a palindrome (3133333313).

The spelling of 2002031311 in words is "two billion, two million, thirty-one thousand, three hundred eleven".