13549327231 has 12 divisors (see below), whose sum is σ = 14963673592. Its totient is φ = 12259170000.

The previous prime is 13549327229. The next prime is 13549327237. The reversal of 13549327231 is 13272394531.

It is a happy number.

It is not a de Polignac number, because 13549327231 - 2¹ = 13549327229 is a prime.

It is a super-2 number, since 2×13549327231² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13549327237) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 239820 + ... + 290881.

Almost surely, 2^13549327231 is an apocalyptic number.

13549327231 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

13549327231 is a deficient number, since it is larger than the sum of its proper divisors (1414346361).

13549327231 is a wasteful number, since it uses less digits than its factorization.

13549327231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 530934 (or 530923 counting only the distinct ones).

The product of its digits is 136080, while the sum is 40.

The spelling of 13549327231 in words is "thirteen billion, five hundred forty-nine million, three hundred twenty-seven thousand, two hundred thirty-one".