1211032312 has 16 divisors (see below), whose sum is σ = 2595069360. Its totient is φ = 519013824.

The previous prime is 1211032307. The next prime is 1211032321. The reversal of 1211032312 is 2132301121.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10812733 + ... + 10812844.

It is an arithmetic number, because the mean of its divisors is an integer number (162191835).

Almost surely, 2^1211032312 is an apocalyptic number.

It is an amenable number.

1211032312 is an abundant number, since it is smaller than the sum of its proper divisors (1384037048).

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

1211032312 is a wasteful number, since it uses less digits than its factorization.

1211032312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21625590 (or 21625586 counting only the distinct ones).

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

The square root of 1211032312 is about 34799.8895400546. The cubic root of 1211032312 is about 1065.9051902908.

Adding to 1211032312 its reverse (2132301121), we get a palindrome (3343333433).

The spelling of 1211032312 in words is "one billion, two hundred eleven million, thirty-two thousand, three hundred twelve".