13020311 has 8 divisors (see below), whose sum is σ = 13275504. Its totient is φ = 12767040.

The previous prime is 13020307. The next prime is 13020331. The reversal of 13020311 is 11302031.

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 13020311 - 2² = 13020307 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13020292 and 13020301.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13020331) 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 7 ways as a sum of consecutive naturals, for example, 24731 + ... + 25251.

It is an arithmetic number, because the mean of its divisors is an integer number (1659438).

Almost surely, 2^13020311 is an apocalyptic number.

13020311 is a deficient number, since it is larger than the sum of its proper divisors (255193).

13020311 is an equidigital number, since it uses as much as digits as its factorization.

13020311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 961.

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

The square root of 13020311 is about 3608.3668050796. The cubic root of 13020311 is about 235.2558613575.

Adding to 13020311 its reverse (11302031), we get a palindrome (24322342).

It can be divided in two parts, 13020 and 311, that added together give a palindrome (13331).

The spelling of 13020311 in words is "thirteen million, twenty thousand, three hundred eleven".