13042431 has 16 divisors (see below), whose sum is σ = 19989600. Its totient is φ = 8394624.

The previous prime is 13042429. The next prime is 13042439. The reversal of 13042431 is 13424031.

It is not a de Polignac number, because 13042431 - 2¹ = 13042429 is a prime.

It is a super-2 number, since 2×13042431² = 340210012779522, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13042439) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7546 + ... + 9111.

It is an arithmetic number, because the mean of its divisors is an integer number (1249350).

Almost surely, 2^13042431 is an apocalyptic number.

13042431 is a deficient number, since it is larger than the sum of its proper divisors (6947169).

13042431 is a wasteful number, since it uses less digits than its factorization.

13042431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16695 (or 16689 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 13042431 is about 3611.4306029605. The cubic root of 13042431 is about 235.3890101359.

Adding to 13042431 its reverse (13424031), we get a palindrome (26466462).

The spelling of 13042431 in words is "thirteen million, forty-two thousand, four hundred thirty-one".