31391714448 has 120 divisors (see below), whose sum is σ = 91577977920. Its totient is φ = 10025783040.

The previous prime is 31391714437. The next prime is 31391714461. The reversal of 31391714448 is 84441719313.

It is a happy number.

31391714448 is a `hidden beast` number, since 3 + 1 + 39 + 171 + 4 + 448 = 666.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 518365 + ... + 575747.

It is an arithmetic number, because the mean of its divisors is an integer number (763149816).

Almost surely, 2^31391714448 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 31391714448, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (45788988960).

31391714448 is an abundant number, since it is smaller than the sum of its proper divisors (60186263472).

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

31391714448 is a wasteful number, since it uses less digits than its factorization.

31391714448 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57557 (or 57548 counting only the distinct ones).

The product of its digits is 290304, while the sum is 45.

The spelling of 31391714448 in words is "thirty-one billion, three hundred ninety-one million, seven hundred fourteen thousand, four hundred forty-eight".