13231020231 has 48 divisors (see below), whose sum is σ = 22820851872. Its totient is φ = 7280582400.

The previous prime is 13231020203. The next prime is 13231020239. The reversal of 13231020231 is 13202013231.

It is not a de Polignac number, because 13231020231 - 2¹¹ = 13231018183 is a prime.

It is a super-2 number, since 2×13231020231² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13231020239) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 5760 + ... + 162773.

It is an arithmetic number, because the mean of its divisors is an integer number (475434414).

Almost surely, 2^13231020231 is an apocalyptic number.

13231020231 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

13231020231 is a deficient number, since it is larger than the sum of its proper divisors (9589831641).

13231020231 is a wasteful number, since it uses less digits than its factorization.

13231020231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 168624 (or 168621 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 13231020231 its reverse (13202013231), we get a palindrome (26433033462).

The spelling of 13231020231 in words is "thirteen billion, two hundred thirty-one million, twenty thousand, two hundred thirty-one".