4040111321 has 4 divisors (see below), whose sum is σ = 4040239872. Its totient is φ = 4039982772.

The previous prime is 4040111297. The next prime is 4040111347. The reversal of 4040111321 is 1231110404.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 4040111321 - 2¹⁰ = 4040110297 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 4040111321.

It is not an unprimeable number, because it can be changed into a prime (4040111381) 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, 17816 + ... + 91638.

It is an arithmetic number, because the mean of its divisors is an integer number (1010059968).

Almost surely, 2^4040111321 is an apocalyptic number.

It is an amenable number.

4040111321 is a deficient number, since it is larger than the sum of its proper divisors (128551).

4040111321 is an equidigital number, since it uses as much as digits as its factorization.

4040111321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128550.

The product of its (nonzero) digits is 96, while the sum is 17.

The square root of 4040111321 is about 63561.8700244101. The cubic root of 4040111321 is about 1592.6894767843.

Adding to 4040111321 its reverse (1231110404), we get a palindrome (5271221725).

The spelling of 4040111321 in words is "four billion, forty million, one hundred eleven thousand, three hundred twenty-one".