13534435431 has 24 divisors (see below), whose sum is σ = 21489811200. Its totient is φ = 8140064400.

The previous prime is 13534435429. The next prime is 13534435477. The reversal of 13534435431 is 13453443531.

13534435431 is a `hidden beast` number, since 1 + 3 + 534 + 43 + 54 + 31 = 666.

It is not a de Polignac number, because 13534435431 - 2¹ = 13534435429 is a prime.

It is a super-2 number, since 2×13534435431² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13534431431) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 508831 + ... + 534768.

It is an arithmetic number, because the mean of its divisors is an integer number (895408800).

Almost surely, 2^13534435431 is an apocalyptic number.

13534435431 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

13534435431 is a deficient number, since it is larger than the sum of its proper divisors (7955375769).

13534435431 is a wasteful number, since it uses less digits than its factorization.

13534435431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1043747 (or 1043744 counting only the distinct ones).

The product of its digits is 129600, while the sum is 36.

Adding to 13534435431 its reverse (13453443531), we get a palindrome (26987878962).

The spelling of 13534435431 in words is "thirteen billion, five hundred thirty-four million, four hundred thirty-five thousand, four hundred thirty-one".