123130111312 has 40 divisors (see below), whose sum is σ = 256958477216. Its totient is φ = 56819822976.

The previous prime is 123130111309. The next prime is 123130111373. The reversal of 123130111312 is 213111031321.

It is a super-3 number, since 3×123130111312³ (a number of 34 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a self number, because there is not a number n which added to its sum of digits gives 123130111312.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1290763 + ... + 1382869.

Almost surely, 2^123130111312 is an apocalyptic number.

It is an amenable number.

123130111312 is an abundant number, since it is smaller than the sum of its proper divisors (133828365904).

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

123130111312 is a wasteful number, since it uses less digits than its factorization.

123130111312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98555 (or 98549 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 19.

Adding to 123130111312 its reverse (213111031321), we get a palindrome (336241142633).

The spelling of 123130111312 in words is "one hundred twenty-three billion, one hundred thirty million, one hundred eleven thousand, three hundred twelve".