2311023113213 has 4 divisors (see below), whose sum is σ = 2311031062428. Its totient is φ = 2311015164000.

The previous prime is 2311023113177. The next prime is 2311023113233. The reversal of 2311023113213 is 3123113201132.

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

It can be written as a sum of positive squares in 2 ways, for example, as 2088204183844 + 222818929369 = 1445062^2 + 472037^2 .

It is a cyclic number.

It is not a de Polignac number, because 2311023113213 - 2¹² = 2311023109117 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 (2311023113233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3521288 + ... + 4125713.

It is an arithmetic number, because the mean of its divisors is an integer number (577757765607).

Almost surely, 2^{2311023113213} is an apocalyptic number.

It is an amenable number.

2311023113213 is a deficient number, since it is larger than the sum of its proper divisors (7949215).

2311023113213 is an equidigital number, since it uses as much as digits as its factorization.

2311023113213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7949214.

The product of its (nonzero) digits is 648, while the sum is 23.

Adding to 2311023113213 its reverse (3123113201132), we get a palindrome (5434136314345).

The spelling of 2311023113213 in words is "two trillion, three hundred eleven billion, twenty-three million, one hundred thirteen thousand, two hundred thirteen".