40887431 has 12 divisors (see below), whose sum is σ = 46779432. Its totient is φ = 35518848.

The previous prime is 40887421. The next prime is 40887439. The reversal of 40887431 is 13478804.

It is a happy number.

It is not a de Polignac number, because 40887431 - 2¹⁰ = 40886407 is a prime.

It is a super-2 number, since 2×40887431² = 3343564027559522, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 40887391 and 40887400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40887439) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1685 + ... + 9198.

It is an arithmetic number, because the mean of its divisors is an integer number (3898286).

Almost surely, 2^40887431 is an apocalyptic number.

40887431 is a deficient number, since it is larger than the sum of its proper divisors (5892001).

40887431 is a wasteful number, since it uses less digits than its factorization.

40887431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10930 (or 10913 counting only the distinct ones).

The product of its (nonzero) digits is 21504, while the sum is 35.

The square root of 40887431 is about 6394.3280334997. The cubic root of 40887431 is about 344.5058556206.

The spelling of 40887431 in words is "forty million, eight hundred eighty-seven thousand, four hundred thirty-one".