13020031 has 4 divisors (see below), whose sum is σ = 13440064. Its totient is φ = 12600000.

The previous prime is 13020017. The next prime is 13020037. The reversal of 13020031 is 13002031.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 13020031 - 2⁵ = 13019999 is a prime.

It is a super-2 number, since 2×13020031² = 339042414481922, 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 (13020037) 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, 209970 + ... + 210031.

It is an arithmetic number, because the mean of its divisors is an integer number (3360016).

Almost surely, 2^13020031 is an apocalyptic number.

13020031 is a deficient number, since it is larger than the sum of its proper divisors (420033).

13020031 is an equidigital number, since it uses as much as digits as its factorization.

13020031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 420032.

The product of its (nonzero) digits is 18, while the sum is 10.

The square root of 13020031 is about 3608.3280061547. The cubic root of 13020031 is about 235.2541749637.

Adding to 13020031 its reverse (13002031), we get a palindrome (26022062).

The spelling of 13020031 in words is "thirteen million, twenty thousand, thirty-one".