4000111131971 has 2 divisors, whose sum is σ = 4000111131972. Its totient is φ = 4000111131970.

The previous prime is 4000111131959. The next prime is 4000111132051. The reversal of 4000111131971 is 1791311110004.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 4000111131971 - 2¹⁰ = 4000111130947 is a prime.

It is not a weakly prime, because it can be changed into another prime (4000111131931) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2000055565985 + 2000055565986.

It is an arithmetic number, because the mean of its divisors is an integer number (2000055565986).

Almost surely, 2^{4000111131971} is an apocalyptic number.

4000111131971 is a deficient number, since it is larger than the sum of its proper divisors (1).

4000111131971 is an equidigital number, since it uses as much as digits as its factorization.

4000111131971 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 756, while the sum is 29.

Adding to 4000111131971 its reverse (1791311110004), we get a palindrome (5791422241975).

The spelling of 4000111131971 in words is "four trillion, one hundred eleven million, one hundred thirty-one thousand, nine hundred seventy-one".