40903831 has 4 divisors (see below), whose sum is σ = 40916632. Its totient is φ = 40891032.

The previous prime is 40903829. The next prime is 40903843. The reversal of 40903831 is 13830904.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 40903831 - 2¹ = 40903829 is a prime.

It is a super-2 number, since 2×40903831² = 3346246780953122, which contains 22 as substring.

It is a deceptive number, since it divides R_40903830.

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 40903831.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40903801) 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, 2845 + ... + 9481.

It is an arithmetic number, because the mean of its divisors is an integer number (10229158).

Almost surely, 2^40903831 is an apocalyptic number.

40903831 is a deficient number, since it is larger than the sum of its proper divisors (12801).

40903831 is an equidigital number, since it uses as much as digits as its factorization.

40903831 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12800.

The product of its (nonzero) digits is 2592, while the sum is 28.

The square root of 40903831 is about 6395.6102914421. The cubic root of 40903831 is about 344.5519100410.

It can be divided in two parts, 4090 and 3831, that added together give a square (7921 = 89²).

The spelling of 40903831 in words is "forty million, nine hundred three thousand, eight hundred thirty-one".