123102312 has 32 divisors (see below), whose sum is σ = 310934400. Its totient is φ = 40610304.

The previous prime is 123102299. The next prime is 123102319. The reversal of 123102312 is 213201321.

It is a junction number, because it is equal to n+sod(n) for n = 123102291 and 123102300.

It is not an unprimeable number, because it can be changed into a prime (123102319) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24112 + ... + 28767.

It is an arithmetic number, because the mean of its divisors is an integer number (9716700).

Almost surely, 2^123102312 is an apocalyptic number.

123102312 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

123102312 is an abundant number, since it is smaller than the sum of its proper divisors (187832088).

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

123102312 is a wasteful number, since it uses less digits than its factorization.

123102312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52985 (or 52981 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 123102312 is about 11095.1481287994. The cubic root of 123102312 is about 497.4568358972.

Adding to 123102312 its reverse (213201321), we get a palindrome (336303633).

Subtracting 123102312 from its reverse (213201321), we obtain a palindrome (90099009).

The spelling of 123102312 in words is "one hundred twenty-three million, one hundred two thousand, three hundred twelve".