2311131023213 has 16 divisors (see below), whose sum is σ = 2469848578560. Its totient is φ = 2157698509824.

The previous prime is 2311131023207. The next prime is 2311131023237. The reversal of 2311131023213 is 3123201311132.

It is not a de Polignac number, because 2311131023213 - 2⁴ = 2311131023197 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2311136023213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4676453 + ... + 5146986.

It is an arithmetic number, because the mean of its divisors is an integer number (154365536160).

Almost surely, 2^{2311131023213} is an apocalyptic number.

2311131023213 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

2311131023213 is a deficient number, since it is larger than the sum of its proper divisors (158717555347).

2311131023213 is a wasteful number, since it uses less digits than its factorization.

2311131023213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9823708.

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

Adding to 2311131023213 its reverse (3123201311132), we get a palindrome (5434332334345).

The spelling of 2311131023213 in words is "two trillion, three hundred eleven billion, one hundred thirty-one million, twenty-three thousand, two hundred thirteen".