2001312322343 has 2 divisors, whose sum is σ = 2001312322344. Its totient is φ = 2001312322342.

The previous prime is 2001312322297. The next prime is 2001312322349. The reversal of 2001312322343 is 3432232131002.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2001312322343 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2001312322349) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1000656161171 + 1000656161172.

It is an arithmetic number, because the mean of its divisors is an integer number (1000656161172).

Almost surely, 2^{2001312322343} is an apocalyptic number.

2001312322343 is a deficient number, since it is larger than the sum of its proper divisors (1).

2001312322343 is an equidigital number, since it uses as much as digits as its factorization.

2001312322343 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5184, while the sum is 26.

Adding to 2001312322343 its reverse (3432232131002), we get a palindrome (5433544453345).

The spelling of 2001312322343 in words is "two trillion, one billion, three hundred twelve million, three hundred twenty-two thousand, three hundred forty-three".