861312967 has 2 divisors, whose sum is σ = 861312968. Its totient is φ = 861312966.

The previous prime is 861312917. The next prime is 861313009. The reversal of 861312967 is 769213168.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 861312967 - 2⁷ = 861312839 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (861312917) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 430656483 + 430656484.

It is an arithmetic number, because the mean of its divisors is an integer number (430656484).

Almost surely, 2^861312967 is an apocalyptic number.

861312967 is a deficient number, since it is larger than the sum of its proper divisors (1).

861312967 is an equidigital number, since it uses as much as digits as its factorization.

861312967 is an evil number, because the sum of its binary digits is even.

The product of its digits is 108864, while the sum is 43.

The square root of 861312967 is about 29348.1339611226. The cubic root of 861312967 is about 951.4522449652.

It can be divided in two parts, 86131 and 2967, that added together give a palindrome (89098).

The spelling of 861312967 in words is "eight hundred sixty-one million, three hundred twelve thousand, nine hundred sixty-seven".