1212311343 has 8 divisors (see below), whose sum is σ = 1618304688. Its totient is φ = 807262784.

The previous prime is 1212311311. The next prime is 1212311417. The reversal of 1212311343 is 3431132121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1212311343 - 2⁵ = 1212311311 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1212311143) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 233196 + ... + 238337.

It is an arithmetic number, because the mean of its divisors is an integer number (202288086).

Almost surely, 2^1212311343 is an apocalyptic number.

1212311343 is a deficient number, since it is larger than the sum of its proper divisors (405993345).

1212311343 is an equidigital number, since it uses as much as digits as its factorization.

1212311343 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 472393.

The product of its digits is 432, while the sum is 21.

The square root of 1212311343 is about 34818.2616309315. The cubic root of 1212311343 is about 1066.2803099555.

Adding to 1212311343 its reverse (3431132121), we get a palindrome (4643443464).

The spelling of 1212311343 in words is "one billion, two hundred twelve million, three hundred eleven thousand, three hundred forty-three".