31794985 has 4 divisors (see below), whose sum is σ = 38153988. Its totient is φ = 25435984.

The previous prime is 31794953. The next prime is 31794989. The reversal of 31794985 is 58949713.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 22382361 + 9412624 = 4731^2 + 3068^2 .

It is a cyclic number.

It is not a de Polignac number, because 31794985 - 2⁵ = 31794953 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31794989) 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 3 ways as a sum of consecutive naturals, for example, 3179494 + ... + 3179503.

It is an arithmetic number, because the mean of its divisors is an integer number (9538497).

Almost surely, 2^31794985 is an apocalyptic number.

It is an amenable number.

31794985 is a deficient number, since it is larger than the sum of its proper divisors (6359003).

31794985 is an equidigital number, since it uses as much as digits as its factorization.

31794985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6359002.

The product of its digits is 272160, while the sum is 46.

The square root of 31794985 is about 5638.7041951143. The cubic root of 31794985 is about 316.8007551560.

The spelling of 31794985 in words is "thirty-one million, seven hundred ninety-four thousand, nine hundred eighty-five".