123243013243511 has 16 divisors (see below), whose sum is σ = 140879915679744. Its totient is φ = 105613802671104.

The previous prime is 123243013243463. The next prime is 123243013243631. The reversal of 123243013243511 is 115342310342321.

It is a happy number.

It is not a de Polignac number, because 123243013243511 - 2²⁶ = 123242946134647 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123243013245511) 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, 673282946 + ... + 673465968.

It is an arithmetic number, because the mean of its divisors is an integer number (8804994729984).

Almost surely, 2^{123243013243511} is an apocalyptic number.

123243013243511 is a deficient number, since it is larger than the sum of its proper divisors (17636902436233).

123243013243511 is a wasteful number, since it uses less digits than its factorization.

123243013243511 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 203510.

The product of its (nonzero) digits is 51840, while the sum is 35.

Adding to 123243013243511 its reverse (115342310342321), we get a palindrome (238585323585832).

The spelling of 123243013243511 in words is "one hundred twenty-three trillion, two hundred forty-three billion, thirteen million, two hundred forty-three thousand, five hundred eleven".