1231703022013 has 12 divisors (see below), whose sum is σ = 1253165565600. Its totient is φ = 1210602130856.

The previous prime is 1231703022007. The next prime is 1231703022041. The reversal of 1231703022013 is 3102203071321.

It is a happy number.

It is not a de Polignac number, because 1231703022013 - 2³³ = 1223113087421 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1231703022073) 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 11 ways as a sum of consecutive naturals, for example, 20602038 + ... + 20661736.

It is an arithmetic number, because the mean of its divisors is an integer number (104430463800).

Almost surely, 2^{1231703022013} is an apocalyptic number.

It is an amenable number.

1231703022013 is a deficient number, since it is larger than the sum of its proper divisors (21462543587).

1231703022013 is an frugal number, since it uses more digits than its factorization.

1231703022013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65744 (or 65685 counting only the distinct ones).

The product of its (nonzero) digits is 1512, while the sum is 25.

Adding to 1231703022013 its reverse (3102203071321), we get a palindrome (4333906093334).

The spelling of 1231703022013 in words is "one trillion, two hundred thirty-one billion, seven hundred three million, twenty-two thousand, thirteen".