4231330421 has 4 divisors (see below), whose sum is σ = 4334533644. Its totient is φ = 4128127200.

The previous prime is 4231330417. The next prime is 4231330487. The reversal of 4231330421 is 1240331324.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2023740196 + 2207590225 = 44986^2 + 46985^2 .

It is a cyclic number.

It is not a de Polignac number, because 4231330421 - 2² = 4231330417 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 (4231330121) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 51601550 + ... + 51601631.

It is an arithmetic number, because the mean of its divisors is an integer number (1083633411).

Almost surely, 2^4231330421 is an apocalyptic number.

4231330421 is a gapful number since it is divisible by the number (41) formed by its first and last digit.

It is an amenable number.

4231330421 is a deficient number, since it is larger than the sum of its proper divisors (103203223).

4231330421 is a wasteful number, since it uses less digits than its factorization.

4231330421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103203222.

The product of its (nonzero) digits is 1728, while the sum is 23.

The square root of 4231330421 is about 65048.6773193737. The cubic root of 4231330421 is about 1617.4305685554.

Adding to 4231330421 its reverse (1240331324), we get a palindrome (5471661745).

The spelling of 4231330421 in words is "four billion, two hundred thirty-one million, three hundred thirty thousand, four hundred twenty-one".