13542321431 has 8 divisors (see below), whose sum is σ = 14363119584. Its totient is φ = 12724211200.

The previous prime is 13542321427. The next prime is 13542321473. The reversal of 13542321431 is 13412324531.

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

It is a cyclic number.

It is not a de Polignac number, because 13542321431 - 2² = 13542321427 is a prime.

It is a super-2 number, since 2×13542321431² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13542321394 and 13542321403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13542324431) 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, 661595 + ... + 681756.

It is an arithmetic number, because the mean of its divisors is an integer number (1795389948).

Almost surely, 2^13542321431 is an apocalyptic number.

13542321431 is a deficient number, since it is larger than the sum of its proper divisors (820798153).

13542321431 is a wasteful number, since it uses less digits than its factorization.

13542321431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1343961.

The product of its digits is 8640, while the sum is 29.

Adding to 13542321431 its reverse (13412324531), we get a palindrome (26954645962).

The spelling of 13542321431 in words is "thirteen billion, five hundred forty-two million, three hundred twenty-one thousand, four hundred thirty-one".