4293723321 has 6 divisors (see below), whose sum is σ = 6202044810. Its totient is φ = 2862482208.

The previous prime is 4293723307. The next prime is 4293723323. The reversal of 4293723321 is 1233273924.

It can be written as a sum of positive squares in only one way, i.e., 4069802025 + 223921296 = 63795^2 + 14964^2 .

It is not a de Polignac number, because 4293723321 - 2⁷ = 4293723193 is a prime.

It is not an unprimeable number, because it can be changed into a prime (4293723323) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 238540176 + ... + 238540193.

It is an arithmetic number, because the mean of its divisors is an integer number (1033674135).

Almost surely, 2^4293723321 is an apocalyptic number.

It is an amenable number.

4293723321 is a deficient number, since it is larger than the sum of its proper divisors (1908321489).

4293723321 is a wasteful number, since it uses less digits than its factorization.

4293723321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 477080375 (or 477080372 counting only the distinct ones).

The product of its digits is 54432, while the sum is 36.

The square root of 4293723321 is about 65526.5085366220. The cubic root of 4293723321 is about 1625.3417280211.

The spelling of 4293723321 in words is "four billion, two hundred ninety-three million, seven hundred twenty-three thousand, three hundred twenty-one".