1211312432 has 20 divisors (see below), whose sum is σ = 2560274376. Its totient is φ = 550596480.

The previous prime is 1211312419. The next prime is 1211312437. The reversal of 1211312432 is 2342131121.

It is not an unprimeable number, because it can be changed into a prime (1211312437) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3441053 + ... + 3441404.

Almost surely, 2^1211312432 is an apocalyptic number.

It is an amenable number.

1211312432 is an abundant number, since it is smaller than the sum of its proper divisors (1348961944).

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

1211312432 is a wasteful number, since it uses less digits than its factorization.

1211312432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6882476 (or 6882470 counting only the distinct ones).

The product of its digits is 288, while the sum is 20.

The square root of 1211312432 is about 34803.9140327636. The cubic root of 1211312432 is about 1065.9873676587.

Adding to 1211312432 its reverse (2342131121), we get a palindrome (3553443553).

The spelling of 1211312432 in words is "one billion, two hundred eleven million, three hundred twelve thousand, four hundred thirty-two".