13211011231 has 12 divisors (see below), whose sum is σ = 14527604896. Its totient is φ = 12004708320.

The previous prime is 13211011213. The next prime is 13211011237.

It is a happy number.

13211011231 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 13211011231 - 2¹⁵ = 13210978463 is a prime.

It is a super-2 number, since 2×13211011231² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13211011237) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 265435 + ... + 311251.

Almost surely, 2^13211011231 is an apocalyptic number.

13211011231 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

13211011231 is a deficient number, since it is larger than the sum of its proper divisors (1316593665).

13211011231 is a wasteful number, since it uses less digits than its factorization.

13211011231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48222 (or 48211 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 16.

It can be divided in two parts, 132110 and 11231, that added together give a palindrome (143341).

The spelling of 13211011231 in words is "thirteen billion, two hundred eleven million, eleven thousand, two hundred thirty-one".