2121310302323 has 4 divisors (see below), whose sum is σ = 2121925356600. Its totient is φ = 2120695248048.

The previous prime is 2121310302281. The next prime is 2121310302361. The reversal of 2121310302323 is 3232030131212.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2121310302323 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2121310302373) 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, 307521965 + ... + 307528862.

It is an arithmetic number, because the mean of its divisors is an integer number (530481339150).

Almost surely, 2^{2121310302323} is an apocalyptic number.

2121310302323 is a deficient number, since it is larger than the sum of its proper divisors (615054277).

2121310302323 is an equidigital number, since it uses as much as digits as its factorization.

2121310302323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 615054276.

The product of its (nonzero) digits is 1296, while the sum is 23.

Adding to 2121310302323 its reverse (3232030131212), we get a palindrome (5353340433535).

The spelling of 2121310302323 in words is "two trillion, one hundred twenty-one billion, three hundred ten million, three hundred two thousand, three hundred twenty-three".