40400311111 has 4 divisors (see below), whose sum is σ = 40405400224. Its totient is φ = 40395222000.

The previous prime is 40400311099. The next prime is 40400311121. The reversal of 40400311111 is 11111300404.

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 40400311111 - 2²³ = 40391922503 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 (40400311121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2532630 + ... + 2548531.

It is an arithmetic number, because the mean of its divisors is an integer number (10101350056).

Almost surely, 2^40400311111 is an apocalyptic number.

40400311111 is a deficient number, since it is larger than the sum of its proper divisors (5089113).

40400311111 is an equidigital number, since it uses as much as digits as its factorization.

40400311111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5089112.

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 40400311111 its reverse (11111300404), we get a palindrome (51511611515).

The spelling of 40400311111 in words is "forty billion, four hundred million, three hundred eleven thousand, one hundred eleven".