31996011839 has 16 divisors (see below), whose sum is σ = 35345237760. Its totient is φ = 28721098560.

The previous prime is 31996011829. The next prime is 31996011841. The reversal of 31996011839 is 93811069913.

It is not a de Polignac number, because 31996011839 - 2¹⁶ = 31995946303 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31996011809) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 705404 + ... + 749390.

It is an arithmetic number, because the mean of its divisors is an integer number (2209077360).

Almost surely, 2^31996011839 is an apocalyptic number.

31996011839 is a deficient number, since it is larger than the sum of its proper divisors (3349225921).

31996011839 is a wasteful number, since it uses less digits than its factorization.

31996011839 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44830.

The product of its (nonzero) digits is 314928, while the sum is 50.

The spelling of 31996011839 in words is "thirty-one billion, nine hundred ninety-six million, eleven thousand, eight hundred thirty-nine".