40011311 has 2 divisors, whose sum is σ = 40011312. Its totient is φ = 40011310.

The previous prime is 40011299. The next prime is 40011331. The reversal of 40011311 is 11311004.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 40011311 - 2¹⁸ = 39749167 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 40011292 and 40011301.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40011331) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20005655 + 20005656.

It is an arithmetic number, because the mean of its divisors is an integer number (20005656).

Almost surely, 2^40011311 is an apocalyptic number.

40011311 is a deficient number, since it is larger than the sum of its proper divisors (1).

40011311 is an equidigital number, since it uses as much as digits as its factorization.

40011311 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12, while the sum is 11.

The square root of 40011311 is about 6325.4494701958. The cubic root of 40011311 is about 342.0274221939.

Adding to 40011311 its reverse (11311004), we get a palindrome (51322315).

It can be divided in two parts, 400 and 11311, that added together give a palindrome (11711).

The spelling of 40011311 in words is "forty million, eleven thousand, three hundred eleven".