1131033221323 has 4 divisors (see below), whose sum is σ = 1144660127688. Its totient is φ = 1117406314960.

The previous prime is 1131033221299. The next prime is 1131033221333. The reversal of 1131033221323 is 3231223301311.

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 1131033221323 - 2¹⁷ = 1131033090251 is a prime.

It is a super-2 number, since 2×1131033221323² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1131033221333) 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, 6813453058 + ... + 6813453223.

It is an arithmetic number, because the mean of its divisors is an integer number (286165031922).

Almost surely, 2^{1131033221323} is an apocalyptic number.

1131033221323 is a deficient number, since it is larger than the sum of its proper divisors (13626906365).

1131033221323 is an equidigital number, since it uses as much as digits as its factorization.

1131033221323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13626906364.

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

Adding to 1131033221323 its reverse (3231223301311), we get a palindrome (4362256522634).

The spelling of 1131033221323 in words is "one trillion, one hundred thirty-one billion, thirty-three million, two hundred twenty-one thousand, three hundred twenty-three".