31268424 has 64 divisors (see below), whose sum is σ = 86365440. Its totient is φ = 9354560.

The previous prime is 31268401. The next prime is 31268443. The reversal of 31268424 is 42486213.

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 31268391 and 31268400.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21199 + ... + 22625.

It is an arithmetic number, because the mean of its divisors is an integer number (1349460).

Almost surely, 2^31268424 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 31268424, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (43182720).

31268424 is an abundant number, since it is smaller than the sum of its proper divisors (55097016).

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

31268424 is a wasteful number, since it uses less digits than its factorization.

31268424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1530 (or 1526 counting only the distinct ones).

The product of its digits is 9216, while the sum is 30.

The square root of 31268424 is about 5591.8175935916. The cubic root of 31268424 is about 315.0421510739.

The spelling of 31268424 in words is "thirty-one million, two hundred sixty-eight thousand, four hundred twenty-four".