2311211323103 has 4 divisors (see below), whose sum is σ = 2311290128520. Its totient is φ = 2311132517688.

The previous prime is 2311211323093. The next prime is 2311211323117. The reversal of 2311211323103 is 3013231121132.

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

It is a cyclic number.

It is not a de Polignac number, because 2311211323103 - 2²⁴ = 2311194545887 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 (2311211323903) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 39358700 + ... + 39417377.

It is an arithmetic number, because the mean of its divisors is an integer number (577822532130).

Almost surely, 2^{2311211323103} is an apocalyptic number.

2311211323103 is a deficient number, since it is larger than the sum of its proper divisors (78805417).

2311211323103 is an equidigital number, since it uses as much as digits as its factorization.

2311211323103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78805416.

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

Adding to 2311211323103 its reverse (3013231121132), we get a palindrome (5324442444235).

The spelling of 2311211323103 in words is "two trillion, three hundred eleven billion, two hundred eleven million, three hundred twenty-three thousand, one hundred three".