3145305073 has 2 divisors, whose sum is σ = 3145305074. Its totient is φ = 3145305072.

The previous prime is 3145305067. The next prime is 3145305091. The reversal of 3145305073 is 3705035413.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3127941184 + 17363889 = 55928^2 + 4167^2 .

It is an emirp because it is prime and its reverse (3705035413) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3145305073 - 2²⁵ = 3111750641 is a prime.

It is not a weakly prime, because it can be changed into another prime (3145305173) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1572652536 + 1572652537.

It is an arithmetic number, because the mean of its divisors is an integer number (1572652537).

Almost surely, 2^3145305073 is an apocalyptic number.

It is an amenable number.

3145305073 is a deficient number, since it is larger than the sum of its proper divisors (1).

3145305073 is an equidigital number, since it uses as much as digits as its factorization.

3145305073 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18900, while the sum is 31.

The square root of 3145305073 is about 56083.0194711376. The cubic root of 3145305073 is about 1465.1685631155.

The spelling of 3145305073 in words is "three billion, one hundred forty-five million, three hundred five thousand, seventy-three".