31980323271 has 16 divisors (see below), whose sum is σ = 48337331840. Its totient is φ = 18644398560.

The previous prime is 31980323269. The next prime is 31980323281. The reversal of 31980323271 is 17232308913.

It is not a de Polignac number, because 31980323271 - 2¹ = 31980323269 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31980323281) 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 15 ways as a sum of consecutive naturals, for example, 21578425 + ... + 21579906.

It is an arithmetic number, because the mean of its divisors is an integer number (3021083240).

Almost surely, 2^31980323271 is an apocalyptic number.

31980323271 is a deficient number, since it is larger than the sum of its proper divisors (16357008569).

31980323271 is a wasteful number, since it uses less digits than its factorization.

31980323271 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43158366.

The product of its (nonzero) digits is 54432, while the sum is 39.

The spelling of 31980323271 in words is "thirty-one billion, nine hundred eighty million, three hundred twenty-three thousand, two hundred seventy-one".