40256003431 has 4 divisors (see below), whose sum is σ = 46006861072. Its totient is φ = 34505145792.

The previous prime is 40256003423. The next prime is 40256003443. The reversal of 40256003431 is 13430065204.

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 40256003431 - 2³ = 40256003423 is a prime.

It is a super-3 number, since 3×40256003431³ (a number of 33 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

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 40256003431.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40256003531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2875428810 + ... + 2875428823.

It is an arithmetic number, because the mean of its divisors is an integer number (11501715268).

Almost surely, 2^40256003431 is an apocalyptic number.

40256003431 is a deficient number, since it is larger than the sum of its proper divisors (5750857641).

40256003431 is an equidigital number, since it uses as much as digits as its factorization.

40256003431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5750857640.

The product of its (nonzero) digits is 8640, while the sum is 28.

Adding to 40256003431 its reverse (13430065204), we get a palindrome (53686068635).

The spelling of 40256003431 in words is "forty billion, two hundred fifty-six million, three thousand, four hundred thirty-one".