123122312 has 32 divisors (see below), whose sum is σ = 241617600. Its totient is φ = 58707264.

The previous prime is 123122269. The next prime is 123122323. The reversal of 123122312 is 213221321.

It is an unprimeable number.

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, 76298 + ... + 77894.

It is an arithmetic number, because the mean of its divisors is an integer number (7550550).

Almost surely, 2^123122312 is an apocalyptic number.

It is an amenable number.

123122312 is a deficient number, since it is larger than the sum of its proper divisors (118495288).

123122312 is a wasteful number, since it uses less digits than its factorization.

123122312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2045 (or 2041 counting only the distinct ones).

The product of its digits is 144, while the sum is 17.

The square root of 123122312 is about 11096.0493870566. The cubic root of 123122312 is about 497.4837744597.

Adding to 123122312 its reverse (213221321), we get a palindrome (336343633).

Subtracting 123122312 from its reverse (213221321), we obtain a palindrome (90099009).

The spelling of 123122312 in words is "one hundred twenty-three million, one hundred twenty-two thousand, three hundred twelve".