40387311 has 6 divisors (see below), whose sum is σ = 58337240. Its totient is φ = 26924868.

The previous prime is 40387309. The next prime is 40387339. The reversal of 40387311 is 11378304.

40387311 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 40387311 - 2¹ = 40387309 is a prime.

It is a super-2 number, since 2×40387311² = 3262269779621442, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40387381) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2243731 + ... + 2243748.

Almost surely, 2^40387311 is an apocalyptic number.

40387311 is a deficient number, since it is larger than the sum of its proper divisors (17949929).

40387311 is a wasteful number, since it uses less digits than its factorization.

40387311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4487485 (or 4487482 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 27.

The square root of 40387311 is about 6355.1011793676. The cubic root of 40387311 is about 343.0954665176.

The spelling of 40387311 in words is "forty million, three hundred eighty-seven thousand, three hundred eleven".