123311012 has 24 divisors (see below), whose sum is σ = 239276352. Its totient is φ = 55130400.

The previous prime is 123311011. The next prime is 123311051. The reversal of 123311012 is 210113321.

It is not an unprimeable number, because it can be changed into a prime (123311011) 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, 20288 + ... + 25655.

It is an arithmetic number, because the mean of its divisors is an integer number (9969848).

Almost surely, 2^123311012 is an apocalyptic number.

It is an amenable number.

123311012 is a deficient number, since it is larger than the sum of its proper divisors (115965340).

123311012 is a wasteful number, since it uses less digits than its factorization.

123311012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46019 (or 46017 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 14.

The square root of 123311012 is about 11104.5491578902. The cubic root of 123311012 is about 497.7377963049.

Adding to 123311012 its reverse (210113321), we get a palindrome (333424333).

The spelling of 123311012 in words is "one hundred twenty-three million, three hundred eleven thousand, twelve".