13431031 has 8 divisors (see below), whose sum is σ = 13953600. Its totient is φ = 12912480.

The previous prime is 13431017. The next prime is 13431053. The reversal of 13431031 is 13013431.

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 13431031 - 2¹⁵ = 13398263 is a prime.

It is a super-2 number, since 2×13431031² = 360785187445922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13430996 and 13431014.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13431731) 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, 7005 + ... + 8713.

It is an arithmetic number, because the mean of its divisors is an integer number (1744200).

Almost surely, 2^13431031 is an apocalyptic number.

13431031 is a deficient number, since it is larger than the sum of its proper divisors (522569).

13431031 is a wasteful number, since it uses less digits than its factorization.

13431031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2009.

The product of its (nonzero) digits is 108, while the sum is 16.

The square root of 13431031 is about 3664.8371041562. The cubic root of 13431031 is about 237.7039784089.

Adding to 13431031 its reverse (13013431), we get a palindrome (26444462).

The spelling of 13431031 in words is "thirteen million, four hundred thirty-one thousand, thirty-one".