1131343130321 has 4 divisors (see below), whose sum is σ = 1148228848752. Its totient is φ = 1114457411892.

The previous prime is 1131343130299. The next prime is 1131343130327. The reversal of 1131343130321 is 1230313431311.

It is a happy number.

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 a de Polignac number, because none of the positive numbers 2^k-1131343130321 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1131343130327) 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, 8442859115 + ... + 8442859248.

It is an arithmetic number, because the mean of its divisors is an integer number (287057212188).

Almost surely, 2^{1131343130321} is an apocalyptic number.

It is an amenable number.

1131343130321 is a deficient number, since it is larger than the sum of its proper divisors (16885718431).

1131343130321 is an equidigital number, since it uses as much as digits as its factorization.

1131343130321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16885718430.

The product of its (nonzero) digits is 1944, while the sum is 26.

Adding to 1131343130321 its reverse (1230313431311), we get a palindrome (2361656561632).

The spelling of 1131343130321 in words is "one trillion, one hundred thirty-one billion, three hundred forty-three million, one hundred thirty thousand, three hundred twenty-one".