13212031 has 4 divisors (see below), whose sum is σ = 15099472. Its totient is φ = 11324592.

The previous prime is 13212013. The next prime is 13212053. The reversal of 13212031 is 13021231.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13021231 = 41 ⋅317591.

It is a cyclic number.

It is not a de Polignac number, because 13212031 - 2⁷ = 13211903 is a prime.

It is a super-2 number, since 2×13212031² = 349115526289922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13212061) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 943710 + ... + 943723.

It is an arithmetic number, because the mean of its divisors is an integer number (3774868).

Almost surely, 2^13212031 is an apocalyptic number.

13212031 is a deficient number, since it is larger than the sum of its proper divisors (1887441).

13212031 is an equidigital number, since it uses as much as digits as its factorization.

13212031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1887440.

The product of its (nonzero) digits is 36, while the sum is 13.

The square root of 13212031 is about 3634.8357597008. The cubic root of 13212031 is about 236.4049294048.

Adding to 13212031 its reverse (13021231), we get a palindrome (26233262).

The spelling of 13212031 in words is "thirteen million, two hundred twelve thousand, thirty-one".