3261281603 has 2 divisors, whose sum is σ = 3261281604. Its totient is φ = 3261281602.

The previous prime is 3261281539. The next prime is 3261281629. The reversal of 3261281603 is 3061821623.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 3261281603 - 2⁶ = 3261281539 is a prime.

It is a Sophie Germain prime.

It is a self number, because there is not a number n which added to its sum of digits gives 3261281603.

It is not a weakly prime, because it can be changed into another prime (3261281633) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1630640801 + 1630640802.

It is an arithmetic number, because the mean of its divisors is an integer number (1630640802).

Almost surely, 2^3261281603 is an apocalyptic number.

3261281603 is a deficient number, since it is larger than the sum of its proper divisors (1).

3261281603 is an equidigital number, since it uses as much as digits as its factorization.

3261281603 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10368, while the sum is 32.

The square root of 3261281603 is about 57107.6317404250. The cubic root of 3261281603 is about 1482.9599884141.

The spelling of 3261281603 in words is "three billion, two hundred sixty-one million, two hundred eighty-one thousand, six hundred three".