1211259347 has 2 divisors, whose sum is σ = 1211259348. Its totient is φ = 1211259346.

The previous prime is 1211259337. The next prime is 1211259349. The reversal of 1211259347 is 7439521121.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1211259347 is a prime.

Together with 1211259349, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1211259349) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 605629673 + 605629674.

It is an arithmetic number, because the mean of its divisors is an integer number (605629674).

Almost surely, 2^1211259347 is an apocalyptic number.

1211259347 is a deficient number, since it is larger than the sum of its proper divisors (1).

1211259347 is an equidigital number, since it uses as much as digits as its factorization.

1211259347 is an evil number, because the sum of its binary digits is even.

The product of its digits is 15120, while the sum is 35.

The square root of 1211259347 is about 34803.1513946654. The cubic root of 1211259347 is about 1065.9717953576.

The spelling of 1211259347 in words is "one billion, two hundred eleven million, two hundred fifty-nine thousand, three hundred forty-seven".