1213315267 has 2 divisors, whose sum is σ = 1213315268. Its totient is φ = 1213315266.

The previous prime is 1213315241. The next prime is 1213315277. The reversal of 1213315267 is 7625133121.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1213315267 is a prime.

It is not a weakly prime, because it can be changed into another prime (1213315277) 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, 606657633 + 606657634.

It is an arithmetic number, because the mean of its divisors is an integer number (606657634).

Almost surely, 2^1213315267 is an apocalyptic number.

1213315267 is a deficient number, since it is larger than the sum of its proper divisors (1).

1213315267 is an equidigital number, since it uses as much as digits as its factorization.

1213315267 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7560, while the sum is 31.

The square root of 1213315267 is about 34832.6752776757. The cubic root of 1213315267 is about 1066.5745602869.

Adding to 1213315267 its reverse (7625133121), we get a palindrome (8838448388).

The spelling of 1213315267 in words is "one billion, two hundred thirteen million, three hundred fifteen thousand, two hundred sixty-seven".