31327671264 has 96 divisors (see below), whose sum is σ = 87515388576. Its totient is φ = 9778298880.

The previous prime is 31327671253. The next prime is 31327671269. The reversal of 31327671264 is 46217672313.

It is a tau number, because it is divible by the number of its divisors (96).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31327671269) 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, 272784 + ... + 370224.

It is an arithmetic number, because the mean of its divisors is an integer number (911618631).

Almost surely, 2^31327671264 is an apocalyptic number.

31327671264 is a gapful number since it is divisible by the number (34) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 31327671264, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (43757694288).

31327671264 is an abundant number, since it is smaller than the sum of its proper divisors (56187717312).

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

31327671264 is a wasteful number, since it uses less digits than its factorization.

31327671264 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97668 (or 97660 counting only the distinct ones).

The product of its digits is 254016, while the sum is 42.

The spelling of 31327671264 in words is "thirty-one billion, three hundred twenty-seven million, six hundred seventy-one thousand, two hundred sixty-four".