1312961767 has 4 divisors (see below), whose sum is σ = 1413958840. Its totient is φ = 1211964696.

The previous prime is 1312961753. The next prime is 1312961777. The reversal of 1312961767 is 7671692131.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7671692131 = 229 ⋅33500839.

It is a cyclic number.

It is not a de Polignac number, because 1312961767 - 2¹¹ = 1312959719 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1312961707) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 50498517 + ... + 50498542.

It is an arithmetic number, because the mean of its divisors is an integer number (353489710).

Almost surely, 2^1312961767 is an apocalyptic number.

1312961767 is a deficient number, since it is larger than the sum of its proper divisors (100997073).

1312961767 is a wasteful number, since it uses less digits than its factorization.

1312961767 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100997072.

The product of its digits is 95256, while the sum is 43.

The square root of 1312961767 is about 36234.8142950947. The cubic root of 1312961767 is about 1095.0081710225.

The spelling of 1312961767 in words is "one billion, three hundred twelve million, nine hundred sixty-one thousand, seven hundred sixty-seven".