7023431021 has 18 divisors (see below), whose sum is σ = 7356503466. Its totient is φ = 6704556000.

The previous prime is 7023431011. The next prime is 7023431081. The reversal of 7023431021 is 1201343207.

It can be written as a sum of positive squares in 3 ways, for example, as 177688900 + 6845742121 = 13330^2 + 82739^2 .

It is not a de Polignac number, because 7023431021 - 2⁶ = 7023430957 is a prime.

It is a hoax number, since the sum of its digits (23) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7023431011) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 26109275 + ... + 26109543.

It is an arithmetic number, because the mean of its divisors is an integer number (408694637).

Almost surely, 2^7023431021 is an apocalyptic number.

It is an amenable number.

7023431021 is a deficient number, since it is larger than the sum of its proper divisors (333072445).

7023431021 is an equidigital number, since it uses as much as digits as its factorization.

7023431021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 701 (or 401 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 23.

The square root of 7023431021 is about 83805.9128045271. The cubic root of 7023431021 is about 1915.0631833848.

Adding to 7023431021 its reverse (1201343207), we get a palindrome (8224774228).

The spelling of 7023431021 in words is "seven billion, twenty-three million, four hundred thirty-one thousand, twenty-one".