31368805 has 8 divisors (see below), whose sum is σ = 40538232. Its totient is φ = 23164608.

The previous prime is 31368793. The next prime is 31368811. The reversal of 31368805 is 50886313.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 6548481 + 24820324 = 2559^2 + 4982^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 31368805 - 2⁵ = 31368773 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 241234 + ... + 241363.

It is an arithmetic number, because the mean of its divisors is an integer number (5067279).

Almost surely, 2^31368805 is an apocalyptic number.

It is an amenable number.

31368805 is a deficient number, since it is larger than the sum of its proper divisors (9169427).

31368805 is a wasteful number, since it uses less digits than its factorization.

31368805 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 482615.

The product of its (nonzero) digits is 17280, while the sum is 34.

The square root of 31368805 is about 5600.7861055391. The cubic root of 31368805 is about 315.3789174904.

The spelling of 31368805 in words is "thirty-one million, three hundred sixty-eight thousand, eight hundred five".