1131220304323 has 4 divisors (see below), whose sum is σ = 1150393529880. Its totient is φ = 1112047078768.

The previous prime is 1131220304257. The next prime is 1131220304351. The reversal of 1131220304323 is 3234030221311.

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 1131220304323 - 2¹³ = 1131220296131 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1131220304363) 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, 9586612690 + ... + 9586612807.

It is an arithmetic number, because the mean of its divisors is an integer number (287598382470).

Almost surely, 2^{1131220304323} is an apocalyptic number.

1131220304323 is a deficient number, since it is larger than the sum of its proper divisors (19173225557).

1131220304323 is an equidigital number, since it uses as much as digits as its factorization.

1131220304323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19173225556.

The product of its (nonzero) digits is 2592, while the sum is 25.

Adding to 1131220304323 its reverse (3234030221311), we get a palindrome (4365250525634).

The spelling of 1131220304323 in words is "one trillion, one hundred thirty-one billion, two hundred twenty million, three hundred four thousand, three hundred twenty-three".