40284431 has 8 divisors (see below), whose sum is σ = 45857664. Its totient is φ = 35029720.

The previous prime is 40284403. The next prime is 40284443. The reversal of 40284431 is 13448204.

40284431 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 40284431 - 2¹⁸ = 40022287 is a prime.

It is a super-2 number, since 2×40284431² = 3245670761987522, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 40284431.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40284401) 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 7 ways as a sum of consecutive naturals, for example, 79361 + ... + 79866.

It is an arithmetic number, because the mean of its divisors is an integer number (5732208).

Almost surely, 2^40284431 is an apocalyptic number.

40284431 is a deficient number, since it is larger than the sum of its proper divisors (5573233).

40284431 is a wasteful number, since it uses less digits than its factorization.

40284431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 159261.

The product of its (nonzero) digits is 3072, while the sum is 26.

The square root of 40284431 is about 6347.0017331020. The cubic root of 40284431 is about 342.8038924657.

The spelling of 40284431 in words is "forty million, two hundred eighty-four thousand, four hundred thirty-one".