2311232013 has 12 divisors (see below), whose sum is σ = 3338921820. Its totient is φ = 1540601856.

The previous prime is 2311232009. The next prime is 2311232041. The reversal of 2311232013 is 3102321132.

It can be written as a sum of positive squares in 2 ways, for example, as 1625944329 + 685287684 = 40323^2 + 26178^2 .

It is not a de Polignac number, because 2311232013 - 2² = 2311232009 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2311232213) 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 11 ways as a sum of consecutive naturals, for example, 71703 + ... + 98811.

It is an arithmetic number, because the mean of its divisors is an integer number (278243485).

Almost surely, 2^2311232013 is an apocalyptic number.

It is an amenable number.

2311232013 is a deficient number, since it is larger than the sum of its proper divisors (1027689807).

2311232013 is a wasteful number, since it uses less digits than its factorization.

2311232013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36588 (or 36585 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

The square root of 2311232013 is about 48075.2744453945. The cubic root of 2311232013 is about 1322.1513763580.

Adding to 2311232013 its reverse (3102321132), we get a palindrome (5413553145).

The spelling of 2311232013 in words is "two billion, three hundred eleven million, two hundred thirty-two thousand, thirteen".