123201200312 has 8 divisors (see below), whose sum is σ = 231002250600. Its totient is φ = 61600600152.

The previous prime is 123201200231. The next prime is 123201200333. The reversal of 123201200312 is 213002102321.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 7700075012 + ... + 7700075027.

It is an arithmetic number, because the mean of its divisors is an integer number (28875281325).

Almost surely, 2^123201200312 is an apocalyptic number.

It is an amenable number.

123201200312 is a deficient number, since it is larger than the sum of its proper divisors (107801050288).

123201200312 is a wasteful number, since it uses less digits than its factorization.

123201200312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15400150045 (or 15400150041 counting only the distinct ones).

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

Adding to 123201200312 its reverse (213002102321), we get a palindrome (336203302633).

The spelling of 123201200312 in words is "one hundred twenty-three billion, two hundred one million, two hundred thousand, three hundred twelve".