2371309 has 2 divisors, whose sum is σ = 2371310. Its totient is φ = 2371308.

The previous prime is 2371307. The next prime is 2371337. The reversal of 2371309 is 9031732.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2111209 + 260100 = 1453^2 + 510^2 .

It is a cyclic number.

It is not a de Polignac number, because 2371309 - 2¹ = 2371307 is a prime.

Together with 2371307, it forms a pair of twin primes.

2371309 is a lucky number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2371307) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1185654 + 1185655.

It is an arithmetic number, because the mean of its divisors is an integer number (1185655).

2^2371309 is an apocalyptic number.

It is an amenable number.

2371309 is a deficient number, since it is larger than the sum of its proper divisors (1).

2371309 is an equidigital number, since it uses as much as digits as its factorization.

2371309 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1134, while the sum is 25.

The square root of 2371309 is about 1539.9055165821. The cubic root of 2371309 is about 133.3509303164.

The spelling of 2371309 in words is "two million, three hundred seventy-one thousand, three hundred nine".