13255111155231 has 24 divisors (see below), whose sum is σ = 21025165299840. Its totient is φ = 7980199362000.

The previous prime is 13255111155217. The next prime is 13255111155281.

13255111155231 is a `hidden beast` number, since 1 + 3 + 2 + 5 + 5 + 11 + 115 + 523 + 1 = 666.

13255111155231 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 13255111155231 - 2⁷ = 13255111155103 is a prime.

It is a super-2 number, since 2×13255111155231² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13255111155281) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 443329461 + ... + 443359358.

It is an arithmetic number, because the mean of its divisors is an integer number (876048554160).

Almost surely, 2^{13255111155231} is an apocalyptic number.

13255111155231 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

13255111155231 is a deficient number, since it is larger than the sum of its proper divisors (7770054144609).

13255111155231 is a wasteful number, since it uses less digits than its factorization.

13255111155231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 886688987 (or 886688984 counting only the distinct ones).

The product of its digits is 22500, while the sum is 36.

The spelling of 13255111155231 in words is "thirteen trillion, two hundred fifty-five billion, one hundred eleven million, one hundred fifty-five thousand, two hundred thirty-one".