1313020231211 has 4 divisors (see below), whose sum is σ = 1414021787472. Its totient is φ = 1212018674952.

The previous prime is 1313020231189. The next prime is 1313020231219. The reversal of 1313020231211 is 1121320203131.

It is a happy number.

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 1313020231211 - 2²² = 1313016036907 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1313020231219) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 50500778111 + ... + 50500778136.

It is an arithmetic number, because the mean of its divisors is an integer number (353505446868).

Almost surely, 2^{1313020231211} is an apocalyptic number.

1313020231211 is a deficient number, since it is larger than the sum of its proper divisors (101001556261).

1313020231211 is a wasteful number, since it uses less digits than its factorization.

1313020231211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101001556260.

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 1313020231211 its reverse (1121320203131), we get a palindrome (2434340434342).

The spelling of 1313020231211 in words is "one trillion, three hundred thirteen billion, twenty million, two hundred thirty-one thousand, two hundred eleven".