3215442253 has 4 divisors (see below), whose sum is σ = 3223304380. Its totient is φ = 3207580128.

The previous prime is 3215442247. The next prime is 3215442259. The reversal of 3215442253 is 3522445123.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (3215442247) and next prime (3215442259).

It can be written as a sum of positive squares in 2 ways, for example, as 1172583049 + 2042859204 = 34243^2 + 45198^2 .

It is a cyclic number.

It is not a de Polignac number, because 3215442253 - 2¹⁷ = 3215311181 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 (3215442259) 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, 3930450 + ... + 3931267.

It is an arithmetic number, because the mean of its divisors is an integer number (805826095).

Almost surely, 2^3215442253 is an apocalyptic number.

It is an amenable number.

3215442253 is a deficient number, since it is larger than the sum of its proper divisors (7862127).

3215442253 is an equidigital number, since it uses as much as digits as its factorization.

3215442253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7862126.

The product of its digits is 28800, while the sum is 31.

The square root of 3215442253 is about 56704.8697467863. The cubic root of 3215442253 is about 1475.9792027889.

Adding to 3215442253 its reverse (3522445123), we get a palindrome (6737887376).

The spelling of 3215442253 in words is "three billion, two hundred fifteen million, four hundred forty-two thousand, two hundred fifty-three".