40290311 has 4 divisors (see below), whose sum is σ = 40384224. Its totient is φ = 40196400.

The previous prime is 40290293. The next prime is 40290329. The reversal of 40290311 is 11309204.

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

It is an interprime number because it is at equal distance from previous prime (40290293) and next prime (40290329).

It is a cyclic number.

It is not a de Polignac number, because 40290311 - 2⁶ = 40290247 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 (40290511) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 46310 + ... + 47171.

It is an arithmetic number, because the mean of its divisors is an integer number (10096056).

Almost surely, 2^40290311 is an apocalyptic number.

40290311 is a deficient number, since it is larger than the sum of its proper divisors (93913).

40290311 is an equidigital number, since it uses as much as digits as its factorization.

40290311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93912.

The product of its (nonzero) digits is 216, while the sum is 20.

The square root of 40290311 is about 6347.4649270398. The cubic root of 40290311 is about 342.8205704459.

Adding to 40290311 its reverse (11309204), we get a palindrome (51599515).

The spelling of 40290311 in words is "forty million, two hundred ninety thousand, three hundred eleven".