123031243205434 has 16 divisors (see below), whose sum is σ = 189534917629728. Its totient is φ = 59852942587152.

The previous prime is 123031243205363. The next prime is 123031243205447. The reversal of 123031243205434 is 434502342130321.

It is a super-2 number, since 2×123031243205434² (a number of 29 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is a junction number, because it is equal to n+sod(n) for n = 123031243205393 and 123031243205402.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 77557329 + ... + 79127755.

It is an arithmetic number, because the mean of its divisors is an integer number (11845932351858).

Almost surely, 2^{123031243205434} is an apocalyptic number.

123031243205434 is a deficient number, since it is larger than the sum of its proper divisors (66503674424294).

123031243205434 is a wasteful number, since it uses less digits than its factorization.

123031243205434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2629149.

The product of its (nonzero) digits is 207360, while the sum is 37.

Adding to 123031243205434 its reverse (434502342130321), we get a palindrome (557533585335755).

The spelling of 123031243205434 in words is "one hundred twenty-three trillion, thirty-one billion, two hundred forty-three million, two hundred five thousand, four hundred thirty-four".