2001002311 has 16 divisors (see below), whose sum is σ = 2496457728. Its totient is φ = 1558159200.

The previous prime is 2001002293. The next prime is 2001002317. The reversal of 2001002311 is 1132001002.

It is a cyclic number.

It is not a de Polignac number, because 2001002311 - 2¹⁵ = 2000969543 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2001002317) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 116146 + ... + 132256.

It is an arithmetic number, because the mean of its divisors is an integer number (156028608).

Almost surely, 2^2001002311 is an apocalyptic number.

2001002311 is a deficient number, since it is larger than the sum of its proper divisors (495455417).

2001002311 is a wasteful number, since it uses less digits than its factorization.

2001002311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17742.

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

The square root of 2001002311 is about 44732.5643239911. The cubic root of 2001002311 is about 1260.1314868661.

Adding to 2001002311 its reverse (1132001002), we get a palindrome (3133003313).

The spelling of 2001002311 in words is "two billion, one million, two thousand, three hundred eleven".