31836477842 has 16 divisors (see below), whose sum is σ = 51467680320. Its totient is φ = 14682466512.

The previous prime is 31836477823. The next prime is 31836477857. The reversal of 31836477842 is 24877463813.

It is a super-2 number, since 2×31836477842² (a number of 22 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (53) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 435992 + ... + 503747.

It is an arithmetic number, because the mean of its divisors is an integer number (3216730020).

Almost surely, 2^31836477842 is an apocalyptic number.

31836477842 is a deficient number, since it is larger than the sum of its proper divisors (19631202478).

31836477842 is a wasteful number, since it uses less digits than its factorization.

31836477842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 941057.

The product of its digits is 5419008, while the sum is 53.

The spelling of 31836477842 in words is "thirty-one billion, eight hundred thirty-six million, four hundred seventy-seven thousand, eight hundred forty-two".