1331203110023 has 4 divisors (see below), whose sum is σ = 1362161321928. Its totient is φ = 1300244898120.

The previous prime is 1331203110019. The next prime is 1331203110031. The reversal of 1331203110023 is 3200113021331.

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 1331203110023 - 2² = 1331203110019 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1331203109977 and 1331203110004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1331203110073) 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, 15479105888 + ... + 15479105973.

It is an arithmetic number, because the mean of its divisors is an integer number (340540330482).

Almost surely, 2^{1331203110023} is an apocalyptic number.

1331203110023 is a deficient number, since it is larger than the sum of its proper divisors (30958211905).

1331203110023 is an equidigital number, since it uses as much as digits as its factorization.

1331203110023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30958211904.

The product of its (nonzero) digits is 324, while the sum is 20.

Adding to 1331203110023 its reverse (3200113021331), we get a palindrome (4531316131354).

The spelling of 1331203110023 in words is "one trillion, three hundred thirty-one billion, two hundred three million, one hundred ten thousand, twenty-three".