1131031120203 has 40 divisors (see below), whose sum is σ = 1731182934096. Its totient is φ = 735456153600.

The previous prime is 1131031120189. The next prime is 1131031120213. The reversal of 1131031120203 is 3020211301311.

1131031120203 is a `hidden beast` number, since 1 + 1 + 310 + 31 + 120 + 203 = 666.

It is not a de Polignac number, because 1131031120203 - 2¹⁴ = 1131031103819 is a prime.

It is a super-2 number, since 2×1131031120203² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1131031120213) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 14843400 + ... + 14919402.

Almost surely, 2^{1131031120203} is an apocalyptic number.

1131031120203 is a deficient number, since it is larger than the sum of its proper divisors (600151813893).

1131031120203 is an equidigital number, since it uses as much as digits as its factorization.

1131031120203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80537 (or 80528 counting only the distinct ones).

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

Adding to 1131031120203 its reverse (3020211301311), we get a palindrome (4151242421514).

The spelling of 1131031120203 in words is "one trillion, one hundred thirty-one billion, thirty-one million, one hundred twenty thousand, two hundred three".