7312861005 has 32 divisors (see below), whose sum is σ = 11980632576. Its totient is φ = 3806961984.

The previous prime is 7312861001. The next prime is 7312861013. The reversal of 7312861005 is 5001682137.

It is not a de Polignac number, because 7312861005 - 2² = 7312861001 is a prime.

It is a super-2 number, since 2×7312861005² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7312861001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1340814 + ... + 1346256.

It is an arithmetic number, because the mean of its divisors is an integer number (374394768).

Almost surely, 2^7312861005 is an apocalyptic number.

It is an amenable number.

7312861005 is a deficient number, since it is larger than the sum of its proper divisors (4667771571).

7312861005 is a wasteful number, since it uses less digits than its factorization.

7312861005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7577.

The product of its (nonzero) digits is 10080, while the sum is 33.

The square root of 7312861005 is about 85515.2676719193. The cubic root of 7312861005 is about 1941.0159596042.

The spelling of 7312861005 in words is "seven billion, three hundred twelve million, eight hundred sixty-one thousand, five".