31271327140 has 12 divisors (see below), whose sum is σ = 65669787036. Its totient is φ = 12508530848.

The previous prime is 31271327119. The next prime is 31271327207. The reversal of 31271327140 is 4172317213.

It can be written as a sum of positive squares in 2 ways, for example, as 3849954304 + 27421372836 = 62048^2 + 165594^2 .

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 781783159 + ... + 781783198.

It is an arithmetic number, because the mean of its divisors is an integer number (5472482253).

Almost surely, 2^31271327140 is an apocalyptic number.

It is an amenable number.

31271327140 is an abundant number, since it is smaller than the sum of its proper divisors (34398459896).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

31271327140 is a wasteful number, since it uses less digits than its factorization.

31271327140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1563566366 (or 1563566364 counting only the distinct ones).

The product of its (nonzero) digits is 7056, while the sum is 31.

The spelling of 31271327140 in words is "thirty-one billion, two hundred seventy-one million, three hundred twenty-seven thousand, one hundred forty".