1131203300231 has 4 divisors (see below), whose sum is σ = 1134407842512. Its totient is φ = 1127998757952.

The previous prime is 1131203300191. The next prime is 1131203300263. The reversal of 1131203300231 is 1320033021311.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1131203300231 is a prime.

It is a super-2 number, since 2×1131203300231² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1131203300131) 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, 1602270611 + ... + 1602271316.

It is an arithmetic number, because the mean of its divisors is an integer number (283601960628).

Almost surely, 2^{1131203300231} is an apocalyptic number.

1131203300231 is a deficient number, since it is larger than the sum of its proper divisors (3204542281).

1131203300231 is an equidigital number, since it uses as much as digits as its factorization.

1131203300231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3204542280.

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

Adding to 1131203300231 its reverse (1320033021311), we get a palindrome (2451236321542).

The spelling of 1131203300231 in words is "one trillion, one hundred thirty-one billion, two hundred three million, three hundred thousand, two hundred thirty-one".