2021323117 has 4 divisors (see below), whose sum is σ = 2205079776. Its totient is φ = 1837566460.

The previous prime is 2021323093. The next prime is 2021323121. The reversal of 2021323117 is 7113231202.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2021323117 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 (2021323217) 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 3 ways as a sum of consecutive naturals, for example, 91878313 + ... + 91878334.

It is an arithmetic number, because the mean of its divisors is an integer number (551269944).

Almost surely, 2^2021323117 is an apocalyptic number.

It is an amenable number.

2021323117 is a deficient number, since it is larger than the sum of its proper divisors (183756659).

2021323117 is a wasteful number, since it uses less digits than its factorization.

2021323117 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 183756658.

The product of its (nonzero) digits is 504, while the sum is 22.

The square root of 2021323117 is about 44959.1271823642. The cubic root of 2021323117 is about 1264.3828048360.

Adding to 2021323117 its reverse (7113231202), we get a palindrome (9134554319).

The spelling of 2021323117 in words is "two billion, twenty-one million, three hundred twenty-three thousand, one hundred seventeen".