1267956313 has 16 divisors (see below), whose sum is σ = 1383552576. Its totient is φ = 1155026880.

The previous prime is 1267956289. The next prime is 1267956337. The reversal of 1267956313 is 3136597621.

It is an interprime number because it is at equal distance from previous prime (1267956289) and next prime (1267956337).

It is a cyclic number.

It is not a de Polignac number, because 1267956313 - 2¹⁷ = 1267825241 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1267956313.

It is not an unprimeable number, because it can be changed into a prime (1267956383) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 392043 + ... + 395263.

It is an arithmetic number, because the mean of its divisors is an integer number (86472036).

Almost surely, 2^1267956313 is an apocalyptic number.

1267956313 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

1267956313 is a deficient number, since it is larger than the sum of its proper divisors (115596263).

1267956313 is a wasteful number, since it uses less digits than its factorization.

1267956313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3624.

The product of its digits is 204120, while the sum is 43.

The square root of 1267956313 is about 35608.3741976519. The cubic root of 1267956313 is about 1082.3509353169.

The spelling of 1267956313 in words is "one billion, two hundred sixty-seven million, nine hundred fifty-six thousand, three hundred thirteen".