4004123311 has 4 divisors (see below), whose sum is σ = 4089317472. Its totient is φ = 3918929152.

The previous prime is 4004123309. The next prime is 4004123359. The reversal of 4004123311 is 1133214004.

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

It is a cyclic number.

It is not a de Polignac number, because 4004123311 - 2¹ = 4004123309 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 (4004123371) 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, 42597010 + ... + 42597103.

It is an arithmetic number, because the mean of its divisors is an integer number (1022329368).

Almost surely, 2^4004123311 is an apocalyptic number.

4004123311 is a deficient number, since it is larger than the sum of its proper divisors (85194161).

4004123311 is an equidigital number, since it uses as much as digits as its factorization.

4004123311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85194160.

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

The square root of 4004123311 is about 63278.1424427108. The cubic root of 4004123311 is about 1587.9463103402.

Adding to 4004123311 its reverse (1133214004), we get a palindrome (5137337315).

The spelling of 4004123311 in words is "four billion, four million, one hundred twenty-three thousand, three hundred eleven".