1200203231323 has 2 divisors, whose sum is σ = 1200203231324. Its totient is φ = 1200203231322.

The previous prime is 1200203231321. The next prime is 1200203231329. The reversal of 1200203231323 is 3231323020021.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1200203231323 - 2¹ = 1200203231321 is a prime.

Together with 1200203231321, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 1200203231294 and 1200203231303.

It is not a weakly prime, because it can be changed into another prime (1200203231321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 600101615661 + 600101615662.

It is an arithmetic number, because the mean of its divisors is an integer number (600101615662).

Almost surely, 2^{1200203231323} is an apocalyptic number.

1200203231323 is a deficient number, since it is larger than the sum of its proper divisors (1).

1200203231323 is an equidigital number, since it uses as much as digits as its factorization.

1200203231323 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1296, while the sum is 22.

Adding to 1200203231323 its reverse (3231323020021), we get a palindrome (4431526251344).

The spelling of 1200203231323 in words is "one trillion, two hundred billion, two hundred three million, two hundred thirty-one thousand, three hundred twenty-three".