8312949761 has 4 divisors (see below), whose sum is σ = 8398650372. Its totient is φ = 8227249152.

The previous prime is 8312949721. The next prime is 8312949763. The reversal of 8312949761 is 1679492138.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 6879873025 + 1433076736 = 82945^2 + 37856^2 .

It is a cyclic number.

It is not a de Polignac number, because 8312949761 - 2¹⁰ = 8312948737 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (8312949763) 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, 42850160 + ... + 42850353.

It is an arithmetic number, because the mean of its divisors is an integer number (2099662593).

Almost surely, 2^8312949761 is an apocalyptic number.

It is an amenable number.

8312949761 is a deficient number, since it is larger than the sum of its proper divisors (85700611).

8312949761 is an equidigital number, since it uses as much as digits as its factorization.

8312949761 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85700610.

The product of its digits is 653184, while the sum is 50.

The square root of 8312949761 is about 91175.3791382301. The cubic root of 8312949761 is about 2025.7462888487.

It can be divided in two parts, 831 and 2949761, that added together give a palindrome (2950592).

The spelling of 8312949761 in words is "eight billion, three hundred twelve million, nine hundred forty-nine thousand, seven hundred sixty-one".