1201331312023 has 2 divisors, whose sum is σ = 1201331312024. Its totient is φ = 1201331312022.

The previous prime is 1201331312017. The next prime is 1201331312047. The reversal of 1201331312023 is 3202131331021.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1201331312023 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1201331311985 and 1201331312003.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1201331372023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 600665656011 + 600665656012.

It is an arithmetic number, because the mean of its divisors is an integer number (600665656012).

Almost surely, 2^{1201331312023} is an apocalyptic number.

1201331312023 is a deficient number, since it is larger than the sum of its proper divisors (1).

1201331312023 is an equidigital number, since it uses as much as digits as its factorization.

1201331312023 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 648, while the sum is 22.

Adding to 1201331312023 its reverse (3202131331021), we get a palindrome (4403462643044).

The spelling of 1201331312023 in words is "one trillion, two hundred one billion, three hundred thirty-one million, three hundred twelve thousand, twenty-three".