1131001231203 has 20 divisors (see below), whose sum is σ = 1730728176408. Its totient is φ = 735610554720.

The previous prime is 1131001231193. The next prime is 1131001231237. The reversal of 1131001231203 is 3021321001311.

It is not a de Polignac number, because 1131001231203 - 2¹⁰ = 1131001230179 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1131001231303) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 170276901 + ... + 170283542.

Almost surely, 2^{1131001231203} is an apocalyptic number.

1131001231203 is a deficient number, since it is larger than the sum of its proper divisors (599726945205).

1131001231203 is an equidigital number, since it uses as much as digits as its factorization.

1131001231203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 340560496 (or 340560487 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

Adding to 1131001231203 its reverse (3021321001311), we get a palindrome (4152322232514).

The spelling of 1131001231203 in words is "one trillion, one hundred thirty-one billion, one million, two hundred thirty-one thousand, two hundred three".