40312111 has 4 divisors (see below), whose sum is σ = 46070992. Its totient is φ = 34553232.

The previous prime is 40312109. The next prime is 40312141. The reversal of 40312111 is 11121304.

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

It is not a de Polignac number, because 40312111 - 2¹ = 40312109 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 40312091 and 40312100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40312141) 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, 2879430 + ... + 2879443.

It is an arithmetic number, because the mean of its divisors is an integer number (11517748).

Almost surely, 2^40312111 is an apocalyptic number.

40312111 is a deficient number, since it is larger than the sum of its proper divisors (5758881).

40312111 is an equidigital number, since it uses as much as digits as its factorization.

40312111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5758880.

The product of its (nonzero) digits is 24, while the sum is 13.

The square root of 40312111 is about 6349.1819158062. The cubic root of 40312111 is about 342.8823896174.

Adding to 40312111 its reverse (11121304), we get a palindrome (51433415).

The spelling of 40312111 in words is "forty million, three hundred twelve thousand, one hundred eleven".