31850471853 has 12 divisors (see below), whose sum is σ = 46138064700. Its totient is φ = 21172804416.

The previous prime is 31850471819. The next prime is 31850471867. The reversal of 31850471853 is 35817405813.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 23371377129 + 8479094724 = 152877^2 + 92082^2 .

It is not a de Polignac number, because 31850471853 - 2⁶ = 31850471789 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 31850471799 and 31850471808.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31850471813) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5066976 + ... + 5073257.

It is an arithmetic number, because the mean of its divisors is an integer number (3844838725).

Almost surely, 2^31850471853 is an apocalyptic number.

It is an amenable number.

31850471853 is a deficient number, since it is larger than the sum of its proper divisors (14287592847).

31850471853 is a wasteful number, since it uses less digits than its factorization.

31850471853 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10140588 (or 10140585 counting only the distinct ones).

The product of its (nonzero) digits is 403200, while the sum is 45.

The spelling of 31850471853 in words is "thirty-one billion, eight hundred fifty million, four hundred seventy-one thousand, eight hundred fifty-three".