31740849 has 32 divisors (see below), whose sum is σ = 56576000. Its totient is φ = 17181072.

The previous prime is 31740833. The next prime is 31740859. The reversal of 31740849 is 94804713.

It is a happy number.

It is not a de Polignac number, because 31740849 - 2⁴ = 31740833 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31740859) 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 31 ways as a sum of consecutive naturals, for example, 829 + ... + 8010.

It is an arithmetic number, because the mean of its divisors is an integer number (1768000).

Almost surely, 2^31740849 is an apocalyptic number.

It is an amenable number.

31740849 is a deficient number, since it is larger than the sum of its proper divisors (24835151).

31740849 is a wasteful number, since it uses less digits than its factorization.

31740849 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8874 (or 8868 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 36.

The square root of 31740849 is about 5633.9017563319. The cubic root of 31740849 is about 316.6208518514.

The spelling of 31740849 in words is "thirty-one million, seven hundred forty thousand, eight hundred forty-nine".