31679850447 has 12 divisors (see below), whose sum is σ = 52296896080. Its totient is φ = 18102771648.

The previous prime is 31679850379. The next prime is 31679850451. The reversal of 31679850447 is 74405897613.

31679850447 is a `hidden beast` number, since 3 + 1 + 6 + 7 + 98 + 504 + 47 = 666.

It is not a de Polignac number, because 31679850447 - 2¹⁰ = 31679849423 is a prime.

It is a super-2 number, since 2×31679850447² (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 = 31679850393 and 31679850402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31679850347) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 251427322 + ... + 251427447.

Almost surely, 2^31679850447 is an apocalyptic number.

31679850447 is a deficient number, since it is larger than the sum of its proper divisors (20617045633).

31679850447 is a wasteful number, since it uses less digits than its factorization.

31679850447 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 502854782 (or 502854779 counting only the distinct ones).

The product of its (nonzero) digits is 5080320, while the sum is 54.

The spelling of 31679850447 in words is "thirty-one billion, six hundred seventy-nine million, eight hundred fifty thousand, four hundred forty-seven".