30641312 has 48 divisors (see below), whose sum is σ = 65920680. Its totient is φ = 13934592.

The previous prime is 30641297. The next prime is 30641323. The reversal of 30641312 is 21314603.

It can be written as a sum of positive squares in 4 ways, for example, as 19324816 + 11316496 = 4396^2 + 3364^2 .

It is an unprimeable number.

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, 29864 + ... + 30872.

Almost surely, 2^30641312 is an apocalyptic number.

30641312 is a gapful number since it is divisible by the number (32) 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 30641312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32960340).

30641312 is an abundant number, since it is smaller than the sum of its proper divisors (35279368).

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

30641312 is a wasteful number, since it uses less digits than its factorization.

30641312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1105 (or 1097 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 20.

The square root of 30641312 is about 5535.4595111878. The cubic root of 30641312 is about 312.9217754414.

Adding to 30641312 its reverse (21314603), we get a palindrome (51955915).

The spelling of 30641312 in words is "thirty million, six hundred forty-one thousand, three hundred twelve".