123431123435 has 4 divisors (see below), whose sum is σ = 148117348128. Its totient is φ = 98744898744.

The previous prime is 123431123399. The next prime is 123431123437. The reversal of 123431123435 is 534321134321.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 123431123435 - 2¹⁰ = 123431122411 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (123431123437) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12343112339 + ... + 12343112348.

It is an arithmetic number, because the mean of its divisors is an integer number (37029337032).

Almost surely, 2^123431123435 is an apocalyptic number.

123431123435 is a deficient number, since it is larger than the sum of its proper divisors (24686224693).

123431123435 is an equidigital number, since it uses as much as digits as its factorization.

123431123435 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24686224692.

The product of its digits is 25920, while the sum is 32.

Adding to 123431123435 its reverse (534321134321), we get a palindrome (657752257756).

The spelling of 123431123435 in words is "one hundred twenty-three billion, four hundred thirty-one million, one hundred twenty-three thousand, four hundred thirty-five".