123040311034043 has 32 divisors (see below), whose sum is σ = 141853313145600. Its totient is φ = 105766577525376.

The previous prime is 123040311034009. The next prime is 123040311034061. The reversal of 123040311034043 is 340430113040321.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 123040311034043 - 2⁶ = 123040311033979 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 123040311033997 and 123040311034015.

It is not an unprimeable number, because it can be changed into a prime (123040311034093) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 203676680 + ... + 204279882.

It is an arithmetic number, because the mean of its divisors is an integer number (4432916035800).

Almost surely, 2^{123040311034043} is an apocalyptic number.

123040311034043 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

123040311034043 is a deficient number, since it is larger than the sum of its proper divisors (18813002111557).

123040311034043 is a wasteful number, since it uses less digits than its factorization.

123040311034043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 617291.

The product of its (nonzero) digits is 10368, while the sum is 29.

Adding to 123040311034043 its reverse (340430113040321), we get a palindrome (463470424074364).

The spelling of 123040311034043 in words is "one hundred twenty-three trillion, forty billion, three hundred eleven million, thirty-four thousand, forty-three".