13031331155 has 16 divisors (see below), whose sum is σ = 15986070144. Its totient is φ = 10193187840.

The previous prime is 13031331083. The next prime is 13031331199. The reversal of 13031331155 is 55113313031.

It is not a de Polignac number, because 13031331155 - 2²⁰ = 13030282579 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 215915 + ... + 269595.

It is an arithmetic number, because the mean of its divisors is an integer number (999129384).

Almost surely, 2^13031331155 is an apocalyptic number.

13031331155 is a deficient number, since it is larger than the sum of its proper divisors (2954738989).

13031331155 is a wasteful number, since it uses less digits than its factorization.

13031331155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54766.

The product of its (nonzero) digits is 2025, while the sum is 26.

Adding to 13031331155 its reverse (55113313031), we get a palindrome (68144644186).

The spelling of 13031331155 in words is "thirteen billion, thirty-one million, three hundred thirty-one thousand, one hundred fifty-five".