1131103011031 has 20 divisors (see below), whose sum is σ = 1339236505592. Its totient is φ = 955046329776.

The previous prime is 1131103011019. The next prime is 1131103011229. The reversal of 1131103011031 is 1301103011311.

It is not a de Polignac number, because 1131103011031 - 2⁷ = 1131103010903 is a prime.

It is a super-2 number, since 2×1131103011031² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1131103010996 and 1131103011014.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1131103011431) 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, 3354780 + ... + 3676513.

Almost surely, 2^{1131103011031} is an apocalyptic number.

1131103011031 is a deficient number, since it is larger than the sum of its proper divisors (208133494561).

1131103011031 is an frugal number, since it uses more digits than its factorization.

1131103011031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7031388 (or 7031367 counting only the distinct ones).

The product of its (nonzero) digits is 27, while the sum is 16.

Adding to 1131103011031 its reverse (1301103011311), we get a palindrome (2432206022342).

The spelling of 1131103011031 in words is "one trillion, one hundred thirty-one billion, one hundred three million, eleven thousand, thirty-one".