4231385993 has 2 divisors, whose sum is σ = 4231385994. Its totient is φ = 4231385992.

The previous prime is 4231385987. The next prime is 4231386041. The reversal of 4231385993 is 3995831324.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3698099344 + 533286649 = 60812^2 + 23093^2 .

It is a cyclic number.

It is not a de Polignac number, because 4231385993 - 2²⁶ = 4164277129 is a prime.

It is not a weakly prime, because it can be changed into another prime (4231385903) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2115692996 + 2115692997.

It is an arithmetic number, because the mean of its divisors is an integer number (2115692997).

Almost surely, 2^4231385993 is an apocalyptic number.

It is an amenable number.

4231385993 is a deficient number, since it is larger than the sum of its proper divisors (1).

4231385993 is an equidigital number, since it uses as much as digits as its factorization.

4231385993 is an evil number, because the sum of its binary digits is even.

The product of its digits is 699840, while the sum is 47.

The square root of 4231385993 is about 65049.1044750041. The cubic root of 4231385993 is about 1617.4376493432.

The spelling of 4231385993 in words is "four billion, two hundred thirty-one million, three hundred eighty-five thousand, nine hundred ninety-three".