123454434231 has 64 divisors (see below), whose sum is σ = 204076247040. Its totient is φ = 73359475200.

The previous prime is 123454434227. The next prime is 123454434251. The reversal of 123454434231 is 132434454321.

123454434231 is a `hidden beast` number, since 1 + 234 + 54 + 4 + 342 + 31 = 666.

It is not a de Polignac number, because 123454434231 - 2² = 123454434227 is a prime.

It is a super-2 number, since 2×123454434231² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123454434211) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1008366 + ... + 1124148.

It is an arithmetic number, because the mean of its divisors is an integer number (3188691360).

Almost surely, 2^123454434231 is an apocalyptic number.

123454434231 is a deficient number, since it is larger than the sum of its proper divisors (80621812809).

123454434231 is a wasteful number, since it uses less digits than its factorization.

123454434231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115933 (or 115927 counting only the distinct ones).

The product of its digits is 138240, while the sum is 36.

Adding to 123454434231 its reverse (132434454321), we get a palindrome (255888888552).

The spelling of 123454434231 in words is "one hundred twenty-three billion, four hundred fifty-four million, four hundred thirty-four thousand, two hundred thirty-one".