1312023167687 has 2 divisors, whose sum is σ = 1312023167688. Its totient is φ = 1312023167686.

The previous prime is 1312023167669. The next prime is 1312023167701. The reversal of 1312023167687 is 7867613202131.

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-1312023167687 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1312023767687) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 656011583843 + 656011583844.

It is an arithmetic number, because the mean of its divisors is an integer number (656011583844).

Almost surely, 2^{1312023167687} is an apocalyptic number.

1312023167687 is a deficient number, since it is larger than the sum of its proper divisors (1).

1312023167687 is an equidigital number, since it uses as much as digits as its factorization.

1312023167687 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 508032, while the sum is 47.

The spelling of 1312023167687 in words is "one trillion, three hundred twelve billion, twenty-three million, one hundred sixty-seven thousand, six hundred eighty-seven".