13331001231 has 12 divisors (see below), whose sum is σ = 20388590352. Its totient is φ = 8364549696.

The previous prime is 13331001223. The next prime is 13331001239. The reversal of 13331001231 is 13210013331.

It is a happy number.

13331001231 is a `hidden beast` number, since 1 + 333 + 100 + 1 + 231 = 666.

It is an interprime number because it is at equal distance from previous prime (13331001223) and next prime (13331001239).

It is not a de Polignac number, because 13331001231 - 2³ = 13331001223 is a prime.

It is a super-2 number, since 2×13331001231² (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 (13331001239) 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, 43565211 + ... + 43565516.

It is an arithmetic number, because the mean of its divisors is an integer number (1699049196).

Almost surely, 2^13331001231 is an apocalyptic number.

13331001231 is a deficient number, since it is larger than the sum of its proper divisors (7057589121).

13331001231 is a wasteful number, since it uses less digits than its factorization.

13331001231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87130750 (or 87130747 counting only the distinct ones).

The product of its (nonzero) digits is 162, while the sum is 18.

Adding to 13331001231 its reverse (13210013331), we get a palindrome (26541014562).

It can be divided in two parts, 1333100 and 1231, that added together give a palindrome (1334331).

The spelling of 13331001231 in words is "thirteen billion, three hundred thirty-one million, one thousand, two hundred thirty-one".