13531453431 has 4 divisors (see below), whose sum is σ = 18041937912. Its totient is φ = 9020968952.

The previous prime is 13531453427. The next prime is 13531453451. The reversal of 13531453431 is 13435413531.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 13531453431 - 2² = 13531453427 is a prime.

It is a super-2 number, since 2×13531453431² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 13531453392 and 13531453401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13531453451) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2255242236 + ... + 2255242241.

It is an arithmetic number, because the mean of its divisors is an integer number (4510484478).

Almost surely, 2^13531453431 is an apocalyptic number.

13531453431 is a deficient number, since it is larger than the sum of its proper divisors (4510484481).

13531453431 is an equidigital number, since it uses as much as digits as its factorization.

13531453431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4510484480.

The product of its digits is 32400, while the sum is 33.

Adding to 13531453431 its reverse (13435413531), we get a palindrome (26966866962).

The spelling of 13531453431 in words is "thirteen billion, five hundred thirty-one million, four hundred fifty-three thousand, four hundred thirty-one".