4320231121 has 4 divisors (see below), whose sum is σ = 4391054644. Its totient is φ = 4249407600.

The previous prime is 4320231107. The next prime is 4320231127. The reversal of 4320231121 is 1211320234.

It is a happy number.

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 2496001600 + 1824229521 = 49960^2 + 42711^2 .

It is a cyclic number.

It is not a de Polignac number, because 4320231121 - 2¹¹ = 4320229073 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4320231127) 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, 35411670 + ... + 35411791.

It is an arithmetic number, because the mean of its divisors is an integer number (1097763661).

Almost surely, 2^4320231121 is an apocalyptic number.

It is an amenable number.

4320231121 is a deficient number, since it is larger than the sum of its proper divisors (70823523).

4320231121 is an equidigital number, since it uses as much as digits as its factorization.

4320231121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70823522.

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 4320231121 is about 65728.4650741214. The cubic root of 4320231121 is about 1628.6796138332.

Adding to 4320231121 its reverse (1211320234), we get a palindrome (5531551355).

The spelling of 4320231121 in words is "four billion, three hundred twenty million, two hundred thirty-one thousand, one hundred twenty-one".