31616842873 has 16 divisors (see below), whose sum is σ = 39502854144. Its totient is φ = 24583718160.

The previous prime is 31616842849. The next prime is 31616842903. The reversal of 31616842873 is 37824861613.

It is a cyclic number.

It is not a de Polignac number, because 31616842873 - 2¹³ = 31616834681 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31616842813) 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 15 ways as a sum of consecutive naturals, for example, 403665 + ... + 475582.

It is an arithmetic number, because the mean of its divisors is an integer number (2468928384).

Almost surely, 2^31616842873 is an apocalyptic number.

It is an amenable number.

31616842873 is a deficient number, since it is larger than the sum of its proper divisors (7886011271).

31616842873 is a wasteful number, since it uses less digits than its factorization.

31616842873 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 879732.

The product of its digits is 1161216, while the sum is 49.

The spelling of 31616842873 in words is "thirty-one billion, six hundred sixteen million, eight hundred forty-two thousand, eight hundred seventy-three".