2312111213013 has 16 divisors (see below), whose sum is σ = 3523380791936. Its totient is φ = 1321145017920.

The previous prime is 2312111212921. The next prime is 2312111213029. The reversal of 2312111213013 is 3103121112132.

It is not a de Polignac number, because 2312111213013 - 2⁸ = 2312111212757 is a prime.

It is a super-2 number, since 2×2312111213013² (a number of 26 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2312111213033) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2093218 + ... + 3000963.

It is an arithmetic number, because the mean of its divisors is an integer number (220211299496).

Almost surely, 2^{2312111213013} is an apocalyptic number.

It is an amenable number.

2312111213013 is a deficient number, since it is larger than the sum of its proper divisors (1211269578923).

2312111213013 is a wasteful number, since it uses less digits than its factorization.

2312111213013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5115804.

The product of its (nonzero) digits is 216, while the sum is 21.

Adding to 2312111213013 its reverse (3103121112132), we get a palindrome (5415232325145).

The spelling of 2312111213013 in words is "two trillion, three hundred twelve billion, one hundred eleven million, two hundred thirteen thousand, thirteen".