31642734809 has 8 divisors (see below), whose sum is σ = 36186157248. Its totient is φ = 27105070320.

The previous prime is 31642734769. The next prime is 31642734839. The reversal of 31642734809 is 90843724613.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31642734809 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (31642734839) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1427702 + ... + 1449695.

It is an arithmetic number, because the mean of its divisors is an integer number (4523269656).

Almost surely, 2^31642734809 is an apocalyptic number.

It is an amenable number.

31642734809 is a deficient number, since it is larger than the sum of its proper divisors (4543422439).

31642734809 is a wasteful number, since it uses less digits than its factorization.

31642734809 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2878975.

The product of its (nonzero) digits is 870912, while the sum is 47.

The spelling of 31642734809 in words is "thirty-one billion, six hundred forty-two million, seven hundred thirty-four thousand, eight hundred nine".