1211343479 has 2 divisors, whose sum is σ = 1211343480. Its totient is φ = 1211343478.

The previous prime is 1211343473. The next prime is 1211343521. The reversal of 1211343479 is 9743431121.

It is a weak prime.

It is an emirp because it is prime and its reverse (9743431121) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1211343479 - 2⁸ = 1211343223 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1211343473) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 605671739 + 605671740.

It is an arithmetic number, because the mean of its divisors is an integer number (605671740).

Almost surely, 2^1211343479 is an apocalyptic number.

1211343479 is a deficient number, since it is larger than the sum of its proper divisors (1).

1211343479 is an equidigital number, since it uses as much as digits as its factorization.

1211343479 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 18144, while the sum is 35.

The square root of 1211343479 is about 34804.3600573262. The cubic root of 1211343479 is about 1065.9964749780.

The spelling of 1211343479 in words is "one billion, two hundred eleven million, three hundred forty-three thousand, four hundred seventy-nine".