2001032311 has 4 divisors (see below), whose sum is σ = 2118740112. Its totient is φ = 1883324512.

The previous prime is 2001032281. The next prime is 2001032389. The reversal of 2001032311 is 1132301002.

2001032311 is nontrivially palindromic in base 16.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2001032311 - 2¹⁷ = 2000901239 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2001032291 and 2001032300.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2001039311) 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, 58853875 + ... + 58853908.

It is an arithmetic number, because the mean of its divisors is an integer number (529685028).

Almost surely, 2^2001032311 is an apocalyptic number.

2001032311 is a deficient number, since it is larger than the sum of its proper divisors (117707801).

2001032311 is a wasteful number, since it uses less digits than its factorization.

2001032311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117707800.

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

The square root of 2001032311 is about 44732.8996489161. The cubic root of 2001032311 is about 1260.1377843361.

Adding to 2001032311 its reverse (1132301002), we get a palindrome (3133333313).

The spelling of 2001032311 in words is "two billion, one million, thirty-two thousand, three hundred eleven".