13031331123311 has 16 divisors (see below), whose sum is σ = 13930815423168. Its totient is φ = 12159643372800.

The previous prime is 13031331123281. The next prime is 13031331123401. The reversal of 13031331123311 is 11332113313031.

It is a cyclic number.

It is not a de Polignac number, because 13031331123311 - 2¹⁰ = 13031331122287 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13031331123211) 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, 10005545 + ... + 11232701.

It is an arithmetic number, because the mean of its divisors is an integer number (870675963948).

Almost surely, 2^{13031331123311} is an apocalyptic number.

13031331123311 is a deficient number, since it is larger than the sum of its proper divisors (899484299857).

13031331123311 is a wasteful number, since it uses less digits than its factorization.

13031331123311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1238482.

The product of its (nonzero) digits is 1458, while the sum is 26.

Adding to 13031331123311 its reverse (11332113313031), we get a palindrome (24363444436342).

The spelling of 13031331123311 in words is "thirteen trillion, thirty-one billion, three hundred thirty-one million, one hundred twenty-three thousand, three hundred eleven".