123434130421312 has 28 divisors (see below), whose sum is σ = 244940409790540. Its totient is φ = 61716861812736.

The previous prime is 123434130421297. The next prime is 123434130421321. The reversal of 123434130421312 is 213124031434321.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 110622770565696 + 12811359855616 = 10517736^2 + 3579296^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17428948 + ... + 23465644.

Almost surely, 2^{123434130421312} is an apocalyptic number.

It is an amenable number.

123434130421312 is a deficient number, since it is larger than the sum of its proper divisors (121506279369228).

123434130421312 is an equidigital number, since it uses as much as digits as its factorization.

123434130421312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6356198 (or 6356188 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 34.

Adding to 123434130421312 its reverse (213124031434321), we get a palindrome (336558161855633).

The spelling of 123434130421312 in words is "one hundred twenty-three trillion, four hundred thirty-four billion, one hundred thirty million, four hundred twenty-one thousand, three hundred twelve".