13131033203231 has 16 divisors (see below), whose sum is σ = 13800800908800. Its totient is φ = 12469587530400.

The previous prime is 13131033203209. The next prime is 13131033203251. The reversal of 13131033203231 is 13230233013131.

It is a cyclic number.

It is not a de Polignac number, because 13131033203231 - 2²² = 13131029008927 is a prime.

It is a super-2 number, since 2×13131033203231² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 13131033203231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13131033203201) 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, 5907806 + ... + 7820756.

It is an arithmetic number, because the mean of its divisors is an integer number (862550056800).

Almost surely, 2^{13131033203231} is an apocalyptic number.

13131033203231 is a deficient number, since it is larger than the sum of its proper divisors (669767705569).

13131033203231 is a wasteful number, since it uses less digits than its factorization.

13131033203231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1915126.

The product of its (nonzero) digits is 2916, while the sum is 26.

Adding to 13131033203231 its reverse (13230233013131), we get a palindrome (26361266216362).

The spelling of 13131033203231 in words is "thirteen trillion, one hundred thirty-one billion, thirty-three million, two hundred three thousand, two hundred thirty-one".