13210031 has 4 divisors (see below), whose sum is σ = 13369272. Its totient is φ = 13050792.

The previous prime is 13210013. The next prime is 13210033. The reversal of 13210031 is 13001231.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13001231 = 2131 ⋅6101.

It is a cyclic number.

It is not a de Polignac number, because 13210031 - 2⁶ = 13209967 is a prime.

It is a super-2 number, since 2×13210031² = 349009838041922, 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 = 13209994 and 13210021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13210033) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 79496 + ... + 79661.

It is an arithmetic number, because the mean of its divisors is an integer number (3342318).

Almost surely, 2^13210031 is an apocalyptic number.

13210031 is a deficient number, since it is larger than the sum of its proper divisors (159241).

13210031 is an equidigital number, since it uses as much as digits as its factorization.

13210031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 159240.

The product of its (nonzero) digits is 18, while the sum is 11.

The square root of 13210031 is about 3634.5606336943. The cubic root of 13210031 is about 236.3930000323.

Adding to 13210031 its reverse (13001231), we get a palindrome (26211262).

The spelling of 13210031 in words is "thirteen million, two hundred ten thousand, thirty-one".