1213102339 has 2 divisors, whose sum is σ = 1213102340. Its totient is φ = 1213102338.

The previous prime is 1213102321. The next prime is 1213102361. The reversal of 1213102339 is 9332013121.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1213102339 is a prime.

It is not a weakly prime, because it can be changed into another prime (1213102399) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 606551169 + 606551170.

It is an arithmetic number, because the mean of its divisors is an integer number (606551170).

Almost surely, 2^1213102339 is an apocalyptic number.

1213102339 is a deficient number, since it is larger than the sum of its proper divisors (1).

1213102339 is an equidigital number, since it uses as much as digits as its factorization.

1213102339 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 972, while the sum is 25.

The square root of 1213102339 is about 34829.6187030521. The cubic root of 1213102339 is about 1066.5121646121.

The spelling of 1213102339 in words is "one billion, two hundred thirteen million, one hundred two thousand, three hundred thirty-nine".