1231342204013 has 8 divisors (see below), whose sum is σ = 1236413800440. Its totient is φ = 1226280563200.

The previous prime is 1231342203997. The next prime is 1231342204021. The reversal of 1231342204013 is 3104022431321.

It can be written as a sum of positive squares in 4 ways, for example, as 371024737924 + 860317466089 = 609118^2 + 927533^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1231342204013 - 2⁴ = 1231342203997 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 (1231342204513) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2240978 + ... + 2735811.

It is an arithmetic number, because the mean of its divisors is an integer number (154551725055).

Almost surely, 2^{1231342204013} is an apocalyptic number.

It is an amenable number.

1231342204013 is a deficient number, since it is larger than the sum of its proper divisors (5071596427).

1231342204013 is an equidigital number, since it uses as much as digits as its factorization.

1231342204013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4977807.

The product of its (nonzero) digits is 3456, while the sum is 26.

Adding to 1231342204013 its reverse (3104022431321), we get a palindrome (4335364635334).

The spelling of 1231342204013 in words is "one trillion, two hundred thirty-one billion, three hundred forty-two million, two hundred four thousand, thirteen".