30312122 has 16 divisors (see below), whose sum is σ = 48344040. Its totient is φ = 14204928.

The previous prime is 30312103. The next prime is 30312127. The reversal of 30312122 is 22121303.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 28826161 + 1485961 = 5369^2 + 1219^2 .

It is a junction number, because it is equal to n+sod(n) for n = 30312097 and 30312106.

It is not an unprimeable number, because it can be changed into a prime (30312127) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7004 + ... + 10472.

Almost surely, 2^30312122 is an apocalyptic number.

30312122 is a deficient number, since it is larger than the sum of its proper divisors (18031918).

30312122 is a wasteful number, since it uses less digits than its factorization.

30312122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3745.

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 30312122 is about 5505.6445580876. The cubic root of 30312122 is about 311.7971300616.

Adding to 30312122 its reverse (22121303), we get a palindrome (52433425).

The spelling of 30312122 in words is "thirty million, three hundred twelve thousand, one hundred twenty-two".