13531112345 has 16 divisors (see below), whose sum is σ = 17747071488. Its totient is φ = 9859480320.

The previous prime is 13531112327. The next prime is 13531112389. The reversal of 13531112345 is 54321113531.

It is not a de Polignac number, because 13531112345 - 2¹⁴ = 13531095961 is a prime.

It is a super-2 number, since 2×13531112345² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2564939 + ... + 2570208.

It is an arithmetic number, because the mean of its divisors is an integer number (1109191968).

Almost surely, 2^13531112345 is an apocalyptic number.

It is an amenable number.

13531112345 is a deficient number, since it is larger than the sum of its proper divisors (4215959143).

13531112345 is a wasteful number, since it uses less digits than its factorization.

13531112345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5135200.

The product of its digits is 5400, while the sum is 29.

Adding to 13531112345 its reverse (54321113531), we get a palindrome (67852225876).

The spelling of 13531112345 in words is "thirteen billion, five hundred thirty-one million, one hundred twelve thousand, three hundred forty-five".