31743564 has 12 divisors (see below), whose sum is σ = 74068344. Its totient is φ = 10581184.

The previous prime is 31743563. The next prime is 31743577. The reversal of 31743564 is 46534713.

It is a tau number, because it is divible by the number of its divisors (12).

It is not an unprimeable number, because it can be changed into a prime (31743563) 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, 1322637 + ... + 1322660.

It is an arithmetic number, because the mean of its divisors is an integer number (6172362).

Almost surely, 2^31743564 is an apocalyptic number.

It is an amenable number.

31743564 is an abundant number, since it is smaller than the sum of its proper divisors (42324780).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

31743564 is a wasteful number, since it uses less digits than its factorization.

31743564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2645304 (or 2645302 counting only the distinct ones).

The product of its digits is 30240, while the sum is 33.

The square root of 31743564 is about 5634.1427031981. The cubic root of 31743564 is about 316.6298791368.

The spelling of 31743564 in words is "thirty-one million, seven hundred forty-three thousand, five hundred sixty-four".