1121431332313 has 4 divisors (see below), whose sum is σ = 1121552172468. Its totient is φ = 1121310492160.

The previous prime is 1121431332283. The next prime is 1121431332353. The reversal of 1121431332313 is 3132331341211.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1015876520649 + 105554811664 = 1007907^2 + 324892^2 .

It is a cyclic number.

It is not a de Polignac number, because 1121431332313 - 2¹³ = 1121431324121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1121431332353) 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, 60406156 + ... + 60424717.

It is an arithmetic number, because the mean of its divisors is an integer number (280388043117).

Almost surely, 2^{1121431332313} is an apocalyptic number.

It is an amenable number.

1121431332313 is a deficient number, since it is larger than the sum of its proper divisors (120840155).

1121431332313 is an equidigital number, since it uses as much as digits as its factorization.

1121431332313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 120840154.

The product of its digits is 3888, while the sum is 28.

Adding to 1121431332313 its reverse (3132331341211), we get a palindrome (4253762673524).

The spelling of 1121431332313 in words is "one trillion, one hundred twenty-one billion, four hundred thirty-one million, three hundred thirty-two thousand, three hundred thirteen".