40401311 has 4 divisors (see below), whose sum is σ = 40912800. Its totient is φ = 39889824.

The previous prime is 40401301. The next prime is 40401349. The reversal of 40401311 is 11310404.

It is a happy number.

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 40401311 - 2¹⁰ = 40400287 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 (40401301) 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, 255626 + ... + 255783.

It is an arithmetic number, because the mean of its divisors is an integer number (10228200).

Almost surely, 2^40401311 is an apocalyptic number.

40401311 is a deficient number, since it is larger than the sum of its proper divisors (511489).

40401311 is an equidigital number, since it uses as much as digits as its factorization.

40401311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 511488.

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 40401311 is about 6356.2025612782. The cubic root of 40401311 is about 343.1351058787.

Adding to 40401311 its reverse (11310404), we get a palindrome (51711715).

The spelling of 40401311 in words is "forty million, four hundred one thousand, three hundred eleven".