1131230212 has 12 divisors (see below), whose sum is σ = 2262460480. Its totient is φ = 484812936.

The previous prime is 1131230209. The next prime is 1131230213. The reversal of 1131230212 is 2120321311.

1131230212 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (1131230213) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20200512 + ... + 20200567.

Almost surely, 2^1131230212 is an apocalyptic number.

It is an amenable number.

1131230212 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

1131230212 is a wasteful number, since it uses less digits than its factorization.

1131230212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40401090 (or 40401088 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 16.

The square root of 1131230212 is about 33633.7659503065. The cubic root of 1131230212 is about 1041.9582839242.

Adding to 1131230212 its reverse (2120321311), we get a palindrome (3251551523).

The spelling of 1131230212 in words is "one billion, one hundred thirty-one million, two hundred thirty thousand, two hundred twelve".