1232131212 has 36 divisors (see below), whose sum is σ = 3354136240. Its totient is φ = 379117152.

The previous prime is 1232131211. The next prime is 1232131297. The reversal of 1232131212 is 2121312321.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (1232131211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1315912 + ... + 1316847.

Almost surely, 2^1232131212 is an apocalyptic number.

1232131212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1232131212 is an abundant number, since it is smaller than the sum of its proper divisors (2122005028).

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

1232131212 is a wasteful number, since it uses less digits than its factorization.

1232131212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2632782 (or 2632777 counting only the distinct ones).

The product of its digits is 144, while the sum is 18.

The square root of 1232131212 is about 35101.7266241990. The cubic root of 1232131212 is about 1072.0597387720.

Adding to 1232131212 its reverse (2121312321), we get a palindrome (3353443533).

The spelling of 1232131212 in words is "one billion, two hundred thirty-two million, one hundred thirty-one thousand, two hundred twelve".