31712448 has 56 divisors (see below), whose sum is σ = 84328000. Its totient is φ = 10517760.

The previous prime is 31712437. The next prime is 31712449. The reversal of 31712448 is 84421713.

It is not an unprimeable number, because it can be changed into a prime (31712449) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 63303 + ... + 63801.

Almost surely, 2^31712448 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 31712448, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (42164000).

31712448 is an abundant number, since it is smaller than the sum of its proper divisors (52615552).

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

31712448 is a wasteful number, since it uses less digits than its factorization.

31712448 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 845 (or 835 counting only the distinct ones).

The product of its digits is 5376, while the sum is 30.

The square root of 31712448 is about 5631.3806477630. The cubic root of 31712448 is about 316.5263885916.

The spelling of 31712448 in words is "thirty-one million, seven hundred twelve thousand, four hundred forty-eight".