1323103121311 has 4 divisors (see below), whose sum is σ = 1323105632352. Its totient is φ = 1323100610272.

The previous prime is 1323103121287. The next prime is 1323103121323. The reversal of 1323103121311 is 1131213013231.

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 1323103121311 - 2⁵ = 1323103121279 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 (1323103101311) 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, 127066 + ... + 1631671.

It is an arithmetic number, because the mean of its divisors is an integer number (330776408088).

Almost surely, 2^{1323103121311} is an apocalyptic number.

1323103121311 is a deficient number, since it is larger than the sum of its proper divisors (2511041).

1323103121311 is an equidigital number, since it uses as much as digits as its factorization.

1323103121311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2511040.

The product of its (nonzero) digits is 324, while the sum is 22.

Adding to 1323103121311 its reverse (1131213013231), we get a palindrome (2454316134542).

The spelling of 1323103121311 in words is "one trillion, three hundred twenty-three billion, one hundred three million, one hundred twenty-one thousand, three hundred eleven".