12013311 has 8 divisors (see below), whose sum is σ = 16144384. Its totient is φ = 7945560.

The previous prime is 12013307. The next prime is 12013321. The reversal of 12013311 is 11331021.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 12013311 - 2² = 12013307 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12013321) 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, 15385 + ... + 16146.

It is an arithmetic number, because the mean of its divisors is an integer number (2018048).

Almost surely, 2^12013311 is an apocalyptic number.

12013311 is a deficient number, since it is larger than the sum of its proper divisors (4131073).

12013311 is a wasteful number, since it uses less digits than its factorization.

12013311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31661.

The product of its (nonzero) digits is 18, while the sum is 12.

The square root of 12013311 is about 3466.0223599971. The cubic root of 12013311 is about 229.0274688482.

Adding to 12013311 its reverse (11331021), we get a palindrome (23344332).

It can be divided in two parts, 120 and 13311, that added together give a palindrome (13431).

The spelling of 12013311 in words is "twelve million, thirteen thousand, three hundred eleven".