31830064 has 40 divisors (see below), whose sum is σ = 72395168. Its totient is φ = 13271040.

The previous prime is 31830061. The next prime is 31830079. The reversal of 31830064 is 46003813.

It is not an unprimeable number, because it can be changed into a prime (31830061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 304 + ... + 7984.

Almost surely, 2^31830064 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 31830064, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36197584).

31830064 is an abundant number, since it is smaller than the sum of its proper divisors (40565104).

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

31830064 is a wasteful number, since it uses less digits than its factorization.

31830064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7733 (or 7727 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 25.

The square root of 31830064 is about 5641.8138927122. The cubic root of 31830064 is about 316.9172197414.

Adding to 31830064 its reverse (46003813), we get a palindrome (77833877).

The spelling of 31830064 in words is "thirty-one million, eight hundred thirty thousand, sixty-four".