13131033231223 has 16 divisors (see below), whose sum is σ = 13411297843360. Its totient is φ = 12853674003456.

The previous prime is 13131033231209. The next prime is 13131033231233. The reversal of 13131033231223 is 32213233013131.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 13131033231223 - 2⁵ = 13131033231191 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13131033231191 and 13131033231200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13131033231233) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9178111 + ... + 10511887.

It is an arithmetic number, because the mean of its divisors is an integer number (838206115210).

Almost surely, 2^{13131033231223} is an apocalyptic number.

13131033231223 is a deficient number, since it is larger than the sum of its proper divisors (280264612137).

13131033231223 is a wasteful number, since it uses less digits than its factorization.

13131033231223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1334866.

The product of its (nonzero) digits is 5832, while the sum is 28.

Adding to 13131033231223 its reverse (32213233013131), we get a palindrome (45344266244354).

The spelling of 13131033231223 in words is "thirteen trillion, one hundred thirty-one billion, thirty-three million, two hundred thirty-one thousand, two hundred twenty-three".