123023100312 has 48 divisors (see below), whose sum is σ = 380785788240. Its totient is φ = 35149457088.

The previous prime is 123023100311. The next prime is 123023100353. The reversal of 123023100312 is 213001320321.

123023100312 is a `hidden beast` number, since 1 + 230 + 23 + 100 + 312 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123023100311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 122046223 + ... + 122047230.

It is an arithmetic number, because the mean of its divisors is an integer number (7933037255).

Almost surely, 2^123023100312 is an apocalyptic number.

123023100312 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

123023100312 is an abundant number, since it is smaller than the sum of its proper divisors (257762687928).

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

123023100312 is a wasteful number, since it uses less digits than its factorization.

123023100312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 244093472 (or 244093465 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 123023100312 its reverse (213001320321), we get a palindrome (336024420633).

The spelling of 123023100312 in words is "one hundred twenty-three billion, twenty-three million, one hundred thousand, three hundred twelve".