30343120 has 20 divisors (see below), whose sum is σ = 70547940. Its totient is φ = 12137216.

The previous prime is 30343109. The next prime is 30343121. The reversal of 30343120 is 2134303.

It can be written as a sum of positive squares in 2 ways, for example, as 4981824 + 25361296 = 2232^2 + 5036^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a junction number, because it is equal to n+sod(n) for n = 30343094 and 30343103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30343121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 189565 + ... + 189724.

It is an arithmetic number, because the mean of its divisors is an integer number (3527397).

Almost surely, 2^30343120 is an apocalyptic number.

It is an amenable number.

30343120 is an abundant number, since it is smaller than the sum of its proper divisors (40204820).

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

30343120 is a wasteful number, since it uses less digits than its factorization.

30343120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 379302 (or 379296 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 16.

The square root of 30343120 is about 5508.4589496519. The cubic root of 30343120 is about 311.9033779263.

Adding to 30343120 its reverse (2134303), we get a palindrome (32477423).

The spelling of 30343120 in words is "thirty million, three hundred forty-three thousand, one hundred twenty".