1131031311313 has 8 divisors (see below), whose sum is σ = 1152412093800. Its totient is φ = 1109652031488.

The previous prime is 1131031311233. The next prime is 1131031311349. The reversal of 1131031311313 is 3131131301311.

It can be written as a sum of positive squares in 4 ways, for example, as 52823207889 + 1078208103424 = 229833^2 + 1038368^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1131031311313 - 2²⁵ = 1130997756881 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1131031311373) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1206303 + ... + 1928011.

It is an arithmetic number, because the mean of its divisors is an integer number (144051511725).

Almost surely, 2^{1131031311313} is an apocalyptic number.

It is an amenable number.

1131031311313 is a deficient number, since it is larger than the sum of its proper divisors (21380782487).

1131031311313 is an equidigital number, since it uses as much as digits as its factorization.

1131031311313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 751331.

The product of its (nonzero) digits is 243, while the sum is 22.

Adding to 1131031311313 its reverse (3131131301311), we get a palindrome (4262162612624).

The spelling of 1131031311313 in words is "one trillion, one hundred thirty-one billion, thirty-one million, three hundred eleven thousand, three hundred thirteen".