13533423231 has 8 divisors (see below), whose sum is σ = 18083205504. Its totient is φ = 9002961560.

The previous prime is 13533423187. The next prime is 13533423251. The reversal of 13533423231 is 13232433531.

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 13533423231 - 2¹⁷ = 13533292159 is a prime.

It is a super-2 number, since 2×13533423231² (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 (13533423251) 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, 4828515 + ... + 4831316.

It is an arithmetic number, because the mean of its divisors is an integer number (2260400688).

Almost surely, 2^13533423231 is an apocalyptic number.

13533423231 is a deficient number, since it is larger than the sum of its proper divisors (4549782273).

13533423231 is an equidigital number, since it uses as much as digits as its factorization.

13533423231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9660301.

The product of its digits is 19440, while the sum is 30.

Adding to 13533423231 its reverse (13232433531), we get a palindrome (26765856762).

The spelling of 13533423231 in words is "thirteen billion, five hundred thirty-three million, four hundred twenty-three thousand, two hundred thirty-one".