13231013233131 has 8 divisors (see below), whose sum is σ = 19601501086160. Its totient is φ = 8820675488736.

The previous prime is 13231013233129. The next prime is 13231013233147. The reversal of 13231013233131 is 13133231013231.

13231013233131 is a `hidden beast` number, since 1 + 3 + 2 + 310 + 1 + 32 + 3 + 313 + 1 = 666.

It is not a de Polignac number, because 13231013233131 - 2¹ = 13231013233129 is a prime.

It is a super-2 number, since 2×13231013233131² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 490037527153 = 13231013233131 / (1 + 3 + 2 + 3 + 1 + 0 + 1 + 3 + 2 + 3 + 3 + 1 + 3 + 1).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13231013233095 and 13231013233104.

It is not an unprimeable number, because it can be changed into a prime (13231013233231) 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, 245018763550 + ... + 245018763603.

It is an arithmetic number, because the mean of its divisors is an integer number (2450187635770).

Almost surely, 2^{13231013233131} is an apocalyptic number.

13231013233131 is a deficient number, since it is larger than the sum of its proper divisors (6370487853029).

13231013233131 is an equidigital number, since it uses as much as digits as its factorization.

13231013233131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 490037527162 (or 490037527156 counting only the distinct ones).

The product of its (nonzero) digits is 2916, while the sum is 27.

Adding to 13231013233131 its reverse (13133231013231), we get a palindrome (26364244246362).

The spelling of 13231013233131 in words is "thirteen trillion, two hundred thirty-one billion, thirteen million, two hundred thirty-three thousand, one hundred thirty-one".