1131000312 has 64 divisors (see below), whose sum is σ = 3127330080. Its totient is φ = 338591232.

The previous prime is 1131000281. The next prime is 1131000317. The reversal of 1131000312 is 2130001311.

1131000312 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1131000317) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 37443 + ... + 60530.

Almost surely, 2^1131000312 is an apocalyptic number.

1131000312 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1131000312 is an abundant number, since it is smaller than the sum of its proper divisors (1996329768).

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

1131000312 is a wasteful number, since it uses less digits than its factorization.

1131000312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98032 (or 98028 counting only the distinct ones).

The product of its (nonzero) digits is 18, while the sum is 12.

The square root of 1131000312 is about 33630.3480802682. The cubic root of 1131000312 is about 1041.8876933888.

Adding to 1131000312 its reverse (2130001311), we get a palindrome (3261001623).

Subtracting 1131000312 from its reverse (2130001311), we obtain a palindrome (999000999).

The spelling of 1131000312 in words is "one billion, one hundred thirty-one million, three hundred twelve", and thus it is an aban number.