1131131000 has 32 divisors (see below), whose sum is σ = 2646848880. Its totient is φ = 452452000.

The previous prime is 1131130951. The next prime is 1131131003. The reversal of 1131131000 is 1311311.

It is a happy number.

It is a super-2 number, since 2×1131131000² = 2558914678322000000, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1131131003) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 564566 + ... + 566565.

Almost surely, 2^1131131000 is an apocalyptic number.

1131131000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1131131000 is an abundant number, since it is smaller than the sum of its proper divisors (1515717880).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1131131000 is a wasteful number, since it uses less digits than its factorization.

1131131000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1131152 (or 1131138 counting only the distinct ones).

The product of its (nonzero) digits is 9, while the sum is 11.

The square root of 1131131000 is about 33632.2910310909. The cubic root of 1131131000 is about 1041.9278221649.

Adding to 1131131000 its reverse (1311311), we get a palindrome (1132442311).

The spelling of 1131131000 in words is "one billion, one hundred thirty-one million, one hundred thirty-one thousand".