1131322323013 has 4 divisors (see below), whose sum is σ = 1134582618240. Its totient is φ = 1128062027788.

The previous prime is 1131322323011. The next prime is 1131322323067. The reversal of 1131322323013 is 3103232231311.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1131322323013 - 2¹ = 1131322323011 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 (1131322323011) 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, 1630147093 + ... + 1630147786.

It is an arithmetic number, because the mean of its divisors is an integer number (283645654560).

Almost surely, 2^{1131322323013} is an apocalyptic number.

It is an amenable number.

1131322323013 is a deficient number, since it is larger than the sum of its proper divisors (3260295227).

1131322323013 is an equidigital number, since it uses as much as digits as its factorization.

1131322323013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3260295226.

The product of its (nonzero) digits is 1944, while the sum is 25.

Adding to 1131322323013 its reverse (3103232231311), we get a palindrome (4234554554324).

The spelling of 1131322323013 in words is "one trillion, one hundred thirty-one billion, three hundred twenty-two million, three hundred twenty-three thousand, thirteen".