2912320709 has 2 divisors, whose sum is σ = 2912320710. Its totient is φ = 2912320708.

The previous prime is 2912320687. The next prime is 2912320721. The reversal of 2912320709 is 9070232192.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2344690084 + 567630625 = 48422^2 + 23825^2 .

It is a cyclic number.

It is not a de Polignac number, because 2912320709 - 2¹² = 2912316613 is a prime.

It is a super-2 number, since 2×2912320709² = 16963223824140525362, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2912320729) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1456160354 + 1456160355.

It is an arithmetic number, because the mean of its divisors is an integer number (1456160355).

Almost surely, 2^2912320709 is an apocalyptic number.

It is an amenable number.

2912320709 is a deficient number, since it is larger than the sum of its proper divisors (1).

2912320709 is an equidigital number, since it uses as much as digits as its factorization.

2912320709 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13608, while the sum is 35.

The square root of 2912320709 is about 53965.9217377041. The cubic root of 2912320709 is about 1428.0598183180.

The spelling of 2912320709 in words is "two billion, nine hundred twelve million, three hundred twenty thousand, seven hundred nine".