2021232311 has 12 divisors (see below), whose sum is σ = 2352125520. Its totient is φ = 1731824640.

The previous prime is 2021232307. The next prime is 2021232371. The reversal of 2021232311 is 1132321202.

It is not a de Polignac number, because 2021232311 - 2² = 2021232307 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2021232311.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2021232371) 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 11 ways as a sum of consecutive naturals, for example, 156926 + ... + 169316.

It is an arithmetic number, because the mean of its divisors is an integer number (196010460).

Almost surely, 2^2021232311 is an apocalyptic number.

2021232311 is a deficient number, since it is larger than the sum of its proper divisors (330893209).

2021232311 is a wasteful number, since it uses less digits than its factorization.

2021232311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15734 (or 15727 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 2021232311 is about 44958.1172982143. The cubic root of 2021232311 is about 1264.3638708247.

Adding to 2021232311 its reverse (1132321202), we get a palindrome (3153553513).

The spelling of 2021232311 in words is "two billion, twenty-one million, two hundred thirty-two thousand, three hundred eleven".