1212331343 has 2 divisors, whose sum is σ = 1212331344. Its totient is φ = 1212331342.

The previous prime is 1212331339. The next prime is 1212331349. The reversal of 1212331343 is 3431332121.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1212331343 - 2² = 1212331339 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1212331349) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 606165671 + 606165672.

It is an arithmetic number, because the mean of its divisors is an integer number (606165672).

Almost surely, 2^1212331343 is an apocalyptic number.

1212331343 is a deficient number, since it is larger than the sum of its proper divisors (1).

1212331343 is an equidigital number, since it uses as much as digits as its factorization.

1212331343 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1296, while the sum is 23.

The square root of 1212331343 is about 34818.5488353550. The cubic root of 1212331343 is about 1066.2861735452.

Adding to 1212331343 its reverse (3431332121), we get a palindrome (4643663464).

The spelling of 1212331343 in words is "one billion, two hundred twelve million, three hundred thirty-one thousand, three hundred forty-three".