612131342123 has 16 divisors (see below), whose sum is σ = 724250526720. Its totient is φ = 506485970496.

The previous prime is 612131342111. The next prime is 612131342149. The reversal of 612131342123 is 321243131216.

It is a cyclic number.

It is not a de Polignac number, because 612131342123 - 2¹⁴ = 612131325739 is a prime.

It is not an unprimeable number, because it can be changed into a prime (612131342023) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12719693 + ... + 12767726.

It is an arithmetic number, because the mean of its divisors is an integer number (45265657920).

Almost surely, 2^612131342123 is an apocalyptic number.

612131342123 is a deficient number, since it is larger than the sum of its proper divisors (112119184597).

612131342123 is a wasteful number, since it uses less digits than its factorization.

612131342123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25487546.

The product of its digits is 5184, while the sum is 29.

Adding to 612131342123 its reverse (321243131216), we get a palindrome (933374473339).

The spelling of 612131342123 in words is "six hundred twelve billion, one hundred thirty-one million, three hundred forty-two thousand, one hundred twenty-three".