423123113431 has 8 divisors (see below), whose sum is σ = 445407164720. Its totient is φ = 400840503552.

The previous prime is 423123113293. The next prime is 423123113437. The reversal of 423123113431 is 134311321324.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 423123113431 - 2¹⁹ = 423122589143 is a prime.

It is a super-2 number, since 2×423123113431² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 423123113431.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (423123113437) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 270541 + ... + 958873.

It is an arithmetic number, because the mean of its divisors is an integer number (55675895590).

Almost surely, 2^423123113431 is an apocalyptic number.

423123113431 is a deficient number, since it is larger than the sum of its proper divisors (22284051289).

423123113431 is a wasteful number, since it uses less digits than its factorization.

423123113431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 720705.

The product of its digits is 5184, while the sum is 28.

Adding to 423123113431 its reverse (134311321324), we get a palindrome (557434434755).

The spelling of 423123113431 in words is "four hundred twenty-three billion, one hundred twenty-three million, one hundred thirteen thousand, four hundred thirty-one".