30831064 has 64 divisors (see below), whose sum is σ = 68700960. Its totient is φ = 12810240.

The previous prime is 30831041. The next prime is 30831067. The reversal of 30831064 is 46013803.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30831067) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 55074 + ... + 55630.

Almost surely, 2^30831064 is an apocalyptic number.

30831064 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 30831064, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34350480).

30831064 is an abundant number, since it is smaller than the sum of its proper divisors (37869896).

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

30831064 is a wasteful number, since it uses less digits than its factorization.

30831064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 628 (or 624 counting only the distinct ones).

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

The square root of 30831064 is about 5552.5727370292. The cubic root of 30831064 is about 313.5663886561.

Adding to 30831064 its reverse (46013803), we get a palindrome (76844867).

The spelling of 30831064 in words is "thirty million, eight hundred thirty-one thousand, sixty-four".