3221400373 has 2 divisors, whose sum is σ = 3221400374. Its totient is φ = 3221400372.

The previous prime is 3221400349. The next prime is 3221400437. The reversal of 3221400373 is 3730041223.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2519839204 + 701561169 = 50198^2 + 26487^2 .

It is a cyclic number.

It is not a de Polignac number, because 3221400373 - 2²⁹ = 2684529461 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3221400313) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1610700186 + 1610700187.

It is an arithmetic number, because the mean of its divisors is an integer number (1610700187).

Almost surely, 2^3221400373 is an apocalyptic number.

It is an amenable number.

3221400373 is a deficient number, since it is larger than the sum of its proper divisors (1).

3221400373 is an equidigital number, since it uses as much as digits as its factorization.

3221400373 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3024, while the sum is 25.

The square root of 3221400373 is about 56757.3816608906. The cubic root of 3221400373 is about 1476.8902889774.

Adding to 3221400373 its reverse (3730041223), we get a palindrome (6951441596).

The spelling of 3221400373 in words is "three billion, two hundred twenty-one million, four hundred thousand, three hundred seventy-three".