31801095005 has 16 divisors (see below), whose sum is σ = 38275200000. Its totient is φ = 25365050880.

The previous prime is 31801094989. The next prime is 31801095013. The reversal of 31801095005 is 50059010813.

It is not a de Polignac number, because 31801095005 - 2⁴ = 31801094989 is a prime.

It is a super-2 number, since 2×31801095005² (a number of 22 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2986040 + ... + 2996670.

It is an arithmetic number, because the mean of its divisors is an integer number (2392200000).

Almost surely, 2^31801095005 is an apocalyptic number.

It is an amenable number.

31801095005 is a deficient number, since it is larger than the sum of its proper divisors (6474104995).

31801095005 is a wasteful number, since it uses less digits than its factorization.

31801095005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12364.

The product of its (nonzero) digits is 5400, while the sum is 32.

The spelling of 31801095005 in words is "thirty-one billion, eight hundred one million, ninety-five thousand, five".