3205145231 has 2 divisors, whose sum is σ = 3205145232. Its totient is φ = 3205145230.

The previous prime is 3205145189. The next prime is 3205145233. The reversal of 3205145231 is 1325415023.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3205145231 is a prime.

It is a super-2 number, since 2×3205145231² = 20545911903604086722, which contains 22 as substring.

Together with 3205145233, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 3205145231.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3205145233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1602572615 + 1602572616.

It is an arithmetic number, because the mean of its divisors is an integer number (1602572616).

Almost surely, 2^3205145231 is an apocalyptic number.

3205145231 is a deficient number, since it is larger than the sum of its proper divisors (1).

3205145231 is an equidigital number, since it uses as much as digits as its factorization.

3205145231 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3600, while the sum is 26.

The square root of 3205145231 is about 56614.0020754583. The cubic root of 3205145231 is about 1474.4019762429.

The spelling of 3205145231 in words is "three billion, two hundred five million, one hundred forty-five thousand, two hundred thirty-one".