1201113311623 has 2 divisors, whose sum is σ = 1201113311624. Its totient is φ = 1201113311622.

The previous prime is 1201113311557. The next prime is 1201113311639. The reversal of 1201113311623 is 3261133111021.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1201113311623 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1201113314623) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 600556655811 + 600556655812.

It is an arithmetic number, because the mean of its divisors is an integer number (600556655812).

Almost surely, 2^{1201113311623} is an apocalyptic number.

1201113311623 is a deficient number, since it is larger than the sum of its proper divisors (1).

1201113311623 is an equidigital number, since it uses as much as digits as its factorization.

1201113311623 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 648, while the sum is 25.

Adding to 1201113311623 its reverse (3261133111021), we get a palindrome (4462246422644).

The spelling of 1201113311623 in words is "one trillion, two hundred one billion, one hundred thirteen million, three hundred eleven thousand, six hundred twenty-three".