11331313131031 has 2 divisors, whose sum is σ = 11331313131032. Its totient is φ = 11331313131030.

The previous prime is 11331313131011. The next prime is 11331313131059. The reversal of 11331313131031 is 13013131313311.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 11331313131031 - 2⁵ = 11331313130999 is a prime.

It is a super-2 number, since 2×11331313131031² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 11331313130987 and 11331313131005.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11331313131001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5665656565515 + 5665656565516.

It is an arithmetic number, because the mean of its divisors is an integer number (5665656565516).

Almost surely, 2^{11331313131031} is an apocalyptic number.

11331313131031 is a deficient number, since it is larger than the sum of its proper divisors (1).

11331313131031 is an equidigital number, since it uses as much as digits as its factorization.

11331313131031 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 729, while the sum is 25.

Adding to 11331313131031 its reverse (13013131313311), we get a palindrome (24344444444342).

The spelling of 11331313131031 in words is "eleven trillion, three hundred thirty-one billion, three hundred thirteen million, one hundred thirty-one thousand, thirty-one".