1231012313101 has 4 divisors (see below), whose sum is σ = 1254238960572. Its totient is φ = 1207785665632.

The previous prime is 1231012313093. The next prime is 1231012313123. The reversal of 1231012313101 is 1013132101321.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 572634239076 + 658378074025 = 756726^2 + 811405^2 .

It is a cyclic number.

It is not a de Polignac number, because 1231012313101 - 2³ = 1231012313093 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 (1231012313191) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11613323656 + ... + 11613323761.

It is an arithmetic number, because the mean of its divisors is an integer number (313559740143).

Almost surely, 2^{1231012313101} is an apocalyptic number.

It is an amenable number.

1231012313101 is a deficient number, since it is larger than the sum of its proper divisors (23226647471).

1231012313101 is an equidigital number, since it uses as much as digits as its factorization.

1231012313101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23226647470.

The product of its (nonzero) digits is 108, while the sum is 19.

Adding to 1231012313101 its reverse (1013132101321), we get a palindrome (2244144414422).

The spelling of 1231012313101 in words is "one trillion, two hundred thirty-one billion, twelve million, three hundred thirteen thousand, one hundred one".