2021312093 has 32 divisors (see below), whose sum is σ = 2264976000. Its totient is φ = 1796014080.

The previous prime is 2021312081. The next prime is 2021312099. The reversal of 2021312093 is 3902131202.

It is not a de Polignac number, because 2021312093 - 2⁴ = 2021312077 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 (2021312099) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3153053 + ... + 3153693.

It is an arithmetic number, because the mean of its divisors is an integer number (70780500).

Almost surely, 2^2021312093 is an apocalyptic number.

It is an amenable number.

2021312093 is a deficient number, since it is larger than the sum of its proper divisors (243663907).

2021312093 is a wasteful number, since it uses less digits than its factorization.

2021312093 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 845.

The product of its (nonzero) digits is 648, while the sum is 23.

The square root of 2021312093 is about 44959.0045819522. The cubic root of 2021312093 is about 1264.3805062457.

Adding to 2021312093 its reverse (3902131202), we get a palindrome (5923443295).

The spelling of 2021312093 in words is "two billion, twenty-one million, three hundred twelve thousand, ninety-three".