123130306 has 16 divisors (see below), whose sum is σ = 200426688. Its totient is φ = 56394000.

The previous prime is 123130243. The next prime is 123130327. The reversal of 123130306 is 603031321.

It is a super-2 number, since 2×123130306² = 30322144511307272, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14670 + ... + 21481.

It is an arithmetic number, because the mean of its divisors is an integer number (12526668).

Almost surely, 2^123130306 is an apocalyptic number.

123130306 is a deficient number, since it is larger than the sum of its proper divisors (77296382).

123130306 is a wasteful number, since it uses less digits than its factorization.

123130306 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36297.

The product of its (nonzero) digits is 324, while the sum is 19.

The square root of 123130306 is about 11096.4095995056. The cubic root of 123130306 is about 497.4945409870.

Adding to 123130306 its reverse (603031321), we get a palindrome (726161627).

The spelling of 123130306 in words is "one hundred twenty-three million, one hundred thirty thousand, three hundred six".