123430034312 has 32 divisors (see below), whose sum is σ = 249300676800. Its totient is φ = 56952404544.

The previous prime is 123430034309. The next prime is 123430034317. The reversal of 123430034312 is 213430034321.

It is a super-2 number, since 2×123430034312² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is not an unprimeable number, because it can be changed into a prime (123430034317) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 234239 + ... + 549297.

It is an arithmetic number, because the mean of its divisors is an integer number (7790646150).

Almost surely, 2^123430034312 is an apocalyptic number.

It is an amenable number.

123430034312 is an abundant number, since it is smaller than the sum of its proper divisors (125870642488).

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

123430034312 is a wasteful number, since it uses less digits than its factorization.

123430034312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 318845 (or 318841 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 26.

Adding to 123430034312 its reverse (213430034321), we get a palindrome (336860068633).

Subtracting 123430034312 from its reverse (213430034321), we obtain a palindrome (90000000009).

The spelling of 123430034312 in words is "one hundred twenty-three billion, four hundred thirty million, thirty-four thousand, three hundred twelve".