31846723139 has 24 divisors (see below), whose sum is σ = 41087079264. Its totient is φ = 24144912000.

The previous prime is 31846723123. The next prime is 31846723159. The reversal of 31846723139 is 93132764813.

It is not a de Polignac number, because 31846723139 - 2⁴ = 31846723123 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 31846723093 and 31846723102.

It is not an unprimeable number, because it can be changed into a prime (31846723109) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 476762 + ... + 539439.

It is an arithmetic number, because the mean of its divisors is an integer number (1711961636).

Almost surely, 2^31846723139 is an apocalyptic number.

31846723139 is a deficient number, since it is larger than the sum of its proper divisors (9240356125).

31846723139 is a wasteful number, since it uses less digits than its factorization.

31846723139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1016267 (or 1016256 counting only the distinct ones).

The product of its digits is 653184, while the sum is 47.

The spelling of 31846723139 in words is "thirty-one billion, eight hundred forty-six million, seven hundred twenty-three thousand, one hundred thirty-nine".