3145412521 has 2 divisors, whose sum is σ = 3145412522. Its totient is φ = 3145412520.

The previous prime is 3145412519. The next prime is 3145412579. The reversal of 3145412521 is 1252145413.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3124810000 + 20602521 = 55900^2 + 4539^2 .

It is a cyclic number.

It is not a de Polignac number, because 3145412521 - 2¹ = 3145412519 is a prime.

Together with 3145412519, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 3145412521.

It is not a weakly prime, because it can be changed into another prime (3145412581) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1572706260 + 1572706261.

It is an arithmetic number, because the mean of its divisors is an integer number (1572706261).

Almost surely, 2^3145412521 is an apocalyptic number.

It is an amenable number.

3145412521 is a deficient number, since it is larger than the sum of its proper divisors (1).

3145412521 is an equidigital number, since it uses as much as digits as its factorization.

3145412521 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4800, while the sum is 28.

The square root of 3145412521 is about 56083.9773999669. The cubic root of 3145412521 is about 1465.1852469915.

Adding to 3145412521 its reverse (1252145413), we get a palindrome (4397557934).

The spelling of 3145412521 in words is "three billion, one hundred forty-five million, four hundred twelve thousand, five hundred twenty-one".