13120042431 has 8 divisors (see below), whose sum is σ = 18414094720. Its totient is φ = 8286342552.

The previous prime is 13120042409. The next prime is 13120042477. The reversal of 13120042431 is 13424002131.

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

It is not a de Polignac number, because 13120042431 - 2⁶ = 13120042367 is a prime.

It is a super-2 number, since 2×13120042431² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 13120042398 and 13120042407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13120042031) 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, 115088035 + ... + 115088148.

It is an arithmetic number, because the mean of its divisors is an integer number (2301761840).

Almost surely, 2^13120042431 is an apocalyptic number.

13120042431 is a deficient number, since it is larger than the sum of its proper divisors (5294052289).

13120042431 is a wasteful number, since it uses less digits than its factorization.

13120042431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 230176205.

The product of its (nonzero) digits is 576, while the sum is 21.

Adding to 13120042431 its reverse (13424002131), we get a palindrome (26544044562).

The spelling of 13120042431 in words is "thirteen billion, one hundred twenty million, forty-two thousand, four hundred thirty-one".