1201210311323 has 4 divisors (see below), whose sum is σ = 1310411248728. Its totient is φ = 1092009373920.

The previous prime is 1201210311307. The next prime is 1201210311347. The reversal of 1201210311323 is 3231130121021.

It is a happy number.

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 1201210311323 - 2⁴ = 1201210311307 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1201210311295 and 1201210311304.

It is not an unprimeable number, because it can be changed into a prime (1201210311373) 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 in 3 ways as a sum of consecutive naturals, for example, 54600468686 + ... + 54600468707.

It is an arithmetic number, because the mean of its divisors is an integer number (327602812182).

Almost surely, 2^{1201210311323} is an apocalyptic number.

1201210311323 is a deficient number, since it is larger than the sum of its proper divisors (109200937405).

1201210311323 is a wasteful number, since it uses less digits than its factorization.

1201210311323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109200937404.

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 1201210311323 its reverse (3231130121021), we get a palindrome (4432340432344).

The spelling of 1201210311323 in words is "one trillion, two hundred one billion, two hundred ten million, three hundred eleven thousand, three hundred twenty-three".