1131322023311 has 12 divisors (see below), whose sum is σ = 1200300050712. Its totient is φ = 1065982820496.

The previous prime is 1131322023301. The next prime is 1131322023313. The reversal of 1131322023311 is 1133202231311.

It is not a de Polignac number, because 1131322023311 - 2¹⁰ = 1131322022287 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1131322023313) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 15924296 + ... + 15995181.

It is an arithmetic number, because the mean of its divisors is an integer number (100025004226).

Almost surely, 2^{1131322023311} is an apocalyptic number.

1131322023311 is a deficient number, since it is larger than the sum of its proper divisors (68978027401).

1131322023311 is an equidigital number, since it uses as much as digits as its factorization.

1131322023311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31919590 (or 31919567 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 23.

Adding to 1131322023311 its reverse (1133202231311), we get a palindrome (2264524254622).

The spelling of 1131322023311 in words is "one trillion, one hundred thirty-one billion, three hundred twenty-two million, twenty-three thousand, three hundred eleven".