31486434865 has 8 divisors (see below), whose sum is σ = 37784916288. Its totient is φ = 25188351600.

The previous prime is 31486434841. The next prime is 31486434869. The reversal of 31486434865 is 56843468413.

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

It is not a de Polignac number, because 31486434865 - 2¹⁵ = 31486402097 is a prime.

It is a super-3 number, since 3×31486434865³ (a number of 32 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31486434869) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 117444 + ... + 277066.

It is an arithmetic number, because the mean of its divisors is an integer number (4723114536).

Almost surely, 2^31486434865 is an apocalyptic number.

It is an amenable number.

31486434865 is a deficient number, since it is larger than the sum of its proper divisors (6298481423).

31486434865 is a wasteful number, since it uses less digits than its factorization.

31486434865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 199079.

The product of its digits is 6635520, while the sum is 52.

The spelling of 31486434865 in words is "thirty-one billion, four hundred eighty-six million, four hundred thirty-four thousand, eight hundred sixty-five".