1312132211 has 16 divisors (see below), whose sum is σ = 1440203520. Its totient is φ = 1188030240.

The previous prime is 1312132207. The next prime is 1312132219. The reversal of 1312132211 is 1122312131.

It is a cyclic number.

It is not a de Polignac number, because 1312132211 - 2² = 1312132207 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1312132211.

It is not an unprimeable number, because it can be changed into a prime (1312132219) 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, 399506 + ... + 402776.

It is an arithmetic number, because the mean of its divisors is an integer number (90012720).

Almost surely, 2^1312132211 is an apocalyptic number.

1312132211 is a deficient number, since it is larger than the sum of its proper divisors (128071309).

1312132211 is a wasteful number, since it uses less digits than its factorization.

1312132211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3866.

The product of its digits is 72, while the sum is 17.

The square root of 1312132211 is about 36223.3655393863. The cubic root of 1312132211 is about 1094.7775062772. Note that the first 3 decimals are identical.

Adding to 1312132211 its reverse (1122312131), we get a palindrome (2434444342).

The spelling of 1312132211 in words is "one billion, three hundred twelve million, one hundred thirty-two thousand, two hundred eleven".