1131203200331 has 4 divisors (see below), whose sum is σ = 1132300391664. Its totient is φ = 1130106009000.

The previous prime is 1131203200301. The next prime is 1131203200363. The reversal of 1131203200331 is 1330023021311.

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 1131203200331 - 2³⁸ = 856325293387 is a prime.

It is a super-2 number, since 2×1131203200331² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1131203200301) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 548594120 + ... + 548596181.

It is an arithmetic number, because the mean of its divisors is an integer number (283075097916).

Almost surely, 2^{1131203200331} is an apocalyptic number.

1131203200331 is a deficient number, since it is larger than the sum of its proper divisors (1097191333).

1131203200331 is a wasteful number, since it uses less digits than its factorization.

1131203200331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1097191332.

The product of its (nonzero) digits is 324, while the sum is 20.

Adding to 1131203200331 its reverse (1330023021311), we get a palindrome (2461226221642).

The spelling of 1131203200331 in words is "one trillion, one hundred thirty-one billion, two hundred three million, two hundred thousand, three hundred thirty-one".