30320481 has 16 divisors (see below), whose sum is σ = 41158656. Its totient is φ = 19851216.

The previous prime is 30320471. The next prime is 30320531. The reversal of 30320481 is 18402303.

It is a happy number.

It is not a de Polignac number, because 30320481 - 2¹⁸ = 30058337 is a prime.

It is a super-2 number, since 2×30320481² = 1838663136142722, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (30320471) 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, 65256 + ... + 65718.

It is an arithmetic number, because the mean of its divisors is an integer number (2572416).

Almost surely, 2^30320481 is an apocalyptic number.

It is an amenable number.

30320481 is a deficient number, since it is larger than the sum of its proper divisors (10838175).

30320481 is a wasteful number, since it uses less digits than its factorization.

30320481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 812.

The product of its (nonzero) digits is 576, while the sum is 21.

The square root of 30320481 is about 5506.4036357681. The cubic root of 30320481 is about 311.8257882627.

Adding to 30320481 its reverse (18402303), we get a palindrome (48722784).

The spelling of 30320481 in words is "thirty million, three hundred twenty thousand, four hundred eighty-one".