13231031 has 8 divisors (see below), whose sum is σ = 14632464. Its totient is φ = 11862720.

The previous prime is 13231027. The next prime is 13231061. The reversal of 13231031 is 13013231.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 13231031 - 2² = 13231027 is a prime.

It is a super-2 number, since 2×13231031² = 350120362645922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 13230997 and 13231015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13231061) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7436 + ... + 9041.

It is an arithmetic number, because the mean of its divisors is an integer number (1829058).

Almost surely, 2^13231031 is an apocalyptic number.

13231031 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

13231031 is a deficient number, since it is larger than the sum of its proper divisors (1401433).

13231031 is a wasteful number, since it uses less digits than its factorization.

13231031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16561.

The product of its (nonzero) digits is 54, while the sum is 14.

The square root of 13231031 is about 3637.4484188783. The cubic root of 13231031 is about 236.5181984456.

Adding to 13231031 its reverse (13013231), we get a palindrome (26244262).

The spelling of 13231031 in words is "thirteen million, two hundred thirty-one thousand, thirty-one".