1267204313 has 4 divisors (see below), whose sum is σ = 1270548240. Its totient is φ = 1263860388.

The previous prime is 1267204307. The next prime is 1267204331. The reversal of 1267204313 is 3134027621.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1267204313 - 2⁶ = 1267204249 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1267204513) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1671395 + ... + 1672152.

It is an arithmetic number, because the mean of its divisors is an integer number (317637060).

Almost surely, 2^1267204313 is an apocalyptic number.

It is an amenable number.

1267204313 is a deficient number, since it is larger than the sum of its proper divisors (3343927).

1267204313 is an equidigital number, since it uses as much as digits as its factorization.

1267204313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3343926.

The product of its (nonzero) digits is 6048, while the sum is 29.

The square root of 1267204313 is about 35597.8133176744. The cubic root of 1267204313 is about 1082.1369193038.

The spelling of 1267204313 in words is "one billion, two hundred sixty-seven million, two hundred four thousand, three hundred thirteen".