3723487321 has 2 divisors, whose sum is σ = 3723487322. Its totient is φ = 3723487320.

The previous prime is 3723487309. The next prime is 3723487331. The reversal of 3723487321 is 1237843273.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3694208400 + 29278921 = 60780^2 + 5411^2 .

It is an emirp because it is prime and its reverse (1237843273) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3723487321 - 2¹⁹ = 3722963033 is a prime.

It is not a weakly prime, because it can be changed into another prime (3723487331) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1861743660 + 1861743661.

It is an arithmetic number, because the mean of its divisors is an integer number (1861743661).

Almost surely, 2^3723487321 is an apocalyptic number.

It is an amenable number.

3723487321 is a deficient number, since it is larger than the sum of its proper divisors (1).

3723487321 is an equidigital number, since it uses as much as digits as its factorization.

3723487321 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 169344, while the sum is 40.

The square root of 3723487321 is about 61020.3844710929. The cubic root of 3723487321 is about 1549.9462098572.

The spelling of 3723487321 in words is "three billion, seven hundred twenty-three million, four hundred eighty-seven thousand, three hundred twenty-one".