13404343431 has 16 divisors (see below), whose sum is σ = 18918725760. Its totient is φ = 8427427680.

The previous prime is 13404343423. The next prime is 13404343457. The reversal of 13404343431 is 13434340431.

It is not a de Polignac number, because 13404343431 - 2³ = 13404343423 is a prime.

It is a super-3 number, since 3×13404343431³ (a number of 31 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13404343411) 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, 1787805 + ... + 1795286.

It is an arithmetic number, because the mean of its divisors is an integer number (1182420360).

Almost surely, 2^13404343431 is an apocalyptic number.

13404343431 is a deficient number, since it is larger than the sum of its proper divisors (5514382329).

13404343431 is a wasteful number, since it uses less digits than its factorization.

13404343431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3583166.

The product of its (nonzero) digits is 20736, while the sum is 30.

Adding to 13404343431 its reverse (13434340431), we get a palindrome (26838683862).

The spelling of 13404343431 in words is "thirteen billion, four hundred four million, three hundred forty-three thousand, four hundred thirty-one".