1131321303213 has 16 divisors (see below), whose sum is σ = 1525677212160. Its totient is φ = 745593133824.

The previous prime is 1131321303199. The next prime is 1131321303239. The reversal of 1131321303213 is 3123031231311.

It is not a de Polignac number, because 1131321303213 - 2¹⁷ = 1131321172141 is a prime.

It is a super-2 number, since 2×1131321303213² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1131321303113) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 950820 + ... + 1779522.

It is an arithmetic number, because the mean of its divisors is an integer number (95354825760).

Almost surely, 2^{1131321303213} is an apocalyptic number.

It is an amenable number.

1131321303213 is a deficient number, since it is larger than the sum of its proper divisors (394355908947).

1131321303213 is an equidigital number, since it uses as much as digits as its factorization.

1131321303213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 833908.

The product of its (nonzero) digits is 972, while the sum is 24.

Adding to 1131321303213 its reverse (3123031231311), we get a palindrome (4254352534524).

The spelling of 1131321303213 in words is "one trillion, one hundred thirty-one billion, three hundred twenty-one million, three hundred three thousand, two hundred thirteen".