1311400267 has 2 divisors, whose sum is σ = 1311400268. Its totient is φ = 1311400266.

The previous prime is 1311400219. The next prime is 1311400289. The reversal of 1311400267 is 7620041131.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1311400267 is a prime.

It is a super-4 number, since 4×1311400267⁴ (a number of 38 digits) contains 4444 as substring.

It is not a weakly prime, because it can be changed into another prime (1311400217) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 655700133 + 655700134.

It is an arithmetic number, because the mean of its divisors is an integer number (655700134).

Almost surely, 2^1311400267 is an apocalyptic number.

1311400267 is a deficient number, since it is larger than the sum of its proper divisors (1).

1311400267 is an equidigital number, since it uses as much as digits as its factorization.

1311400267 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1008, while the sum is 25.

The square root of 1311400267 is about 36213.2609274558. The cubic root of 1311400267 is about 1094.5739025892.

Adding to 1311400267 its reverse (7620041131), we get a palindrome (8931441398).

The spelling of 1311400267 in words is "one billion, three hundred eleven million, four hundred thousand, two hundred sixty-seven".