30123106 has 32 divisors (see below), whose sum is σ = 50542128. Its totient is φ = 13374720.

The previous prime is 30123097. The next prime is 30123109. The reversal of 30123106 is 60132103.

It can be written as a sum of positive squares in 8 ways, for example, as 13024881 + 17098225 = 3609^2 + 4135^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 30123106.

It is not an unprimeable number, because it can be changed into a prime (30123109) 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, 166336 + ... + 166516.

Almost surely, 2^30123106 is an apocalyptic number.

30123106 is a deficient number, since it is larger than the sum of its proper divisors (20419022).

30123106 is a wasteful number, since it uses less digits than its factorization.

30123106 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 406.

The product of its (nonzero) digits is 108, while the sum is 16.

The square root of 30123106 is about 5488.4520586409. The cubic root of 30123106 is about 311.1476916265.

Adding to 30123106 its reverse (60132103), we get a palindrome (90255209).

The spelling of 30123106 in words is "thirty million, one hundred twenty-three thousand, one hundred six".