2371345621 has 4 divisors (see below), whose sum is σ = 2375603532. Its totient is φ = 2367087712.

The previous prime is 2371345601. The next prime is 2371345667. The reversal of 2371345621 is 1265431732.

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 341843121 + 2029502500 = 18489^2 + 45050^2 .

It is a cyclic number.

It is not a de Polignac number, because 2371345621 - 2¹⁹ = 2370821333 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2371345601) 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 3 ways as a sum of consecutive naturals, for example, 2128120 + ... + 2129233.

It is an arithmetic number, because the mean of its divisors is an integer number (593900883).

Almost surely, 2^2371345621 is an apocalyptic number.

It is an amenable number.

2371345621 is a deficient number, since it is larger than the sum of its proper divisors (4257911).

2371345621 is an equidigital number, since it uses as much as digits as its factorization.

2371345621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4257910.

The product of its digits is 30240, while the sum is 34.

The square root of 2371345621 is about 48696.4641529547. The cubic root of 2371345621 is about 1333.5161677539.

The spelling of 2371345621 in words is "two billion, three hundred seventy-one million, three hundred forty-five thousand, six hundred twenty-one".