31845112847 has 8 divisors (see below), whose sum is σ = 32200149072. Its totient is φ = 31490856000.

The previous prime is 31845112807. The next prime is 31845112883. The reversal of 31845112847 is 74821154813.

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

It is a cyclic number.

It is not a de Polignac number, because 31845112847 - 2¹⁸ = 31844850703 is a prime.

It is a super-2 number, since 2×31845112847² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 31845112798 and 31845112807.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31845112807) 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, 112478 + ... + 276299.

It is an arithmetic number, because the mean of its divisors is an integer number (4025018634).

Almost surely, 2^31845112847 is an apocalyptic number.

31845112847 is a deficient number, since it is larger than the sum of its proper divisors (355036225).

31845112847 is a wasteful number, since it uses less digits than its factorization.

31845112847 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 389689.

The product of its digits is 215040, while the sum is 44.

The spelling of 31845112847 in words is "thirty-one billion, eight hundred forty-five million, one hundred twelve thousand, eight hundred forty-seven".