30313320 has 32 divisors (see below), whose sum is σ = 90940320. Its totient is φ = 8083520.

The previous prime is 30313313. The next prime is 30313321. The reversal of 30313320 is 2331303.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 30313320.

It is not an unprimeable number, because it can be changed into a prime (30313321) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 126186 + ... + 126425.

It is an arithmetic number, because the mean of its divisors is an integer number (2841885).

Almost surely, 2^30313320 is an apocalyptic number.

30313320 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

30313320 is an abundant number, since it is smaller than the sum of its proper divisors (60627000).

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

30313320 is a wasteful number, since it uses less digits than its factorization.

30313320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 252625 (or 252621 counting only the distinct ones).

The product of its (nonzero) digits is 162, while the sum is 15.

The square root of 30313320 is about 5505.7533544466. The cubic root of 30313320 is about 311.8012376376.

Adding to 30313320 its reverse (2331303), we get a palindrome (32644623).

The spelling of 30313320 in words is "thirty million, three hundred thirteen thousand, three hundred twenty".