3145242533 has 4 divisors (see below), whose sum is σ = 3196803948. Its totient is φ = 3093681120.

The previous prime is 3145242521. The next prime is 3145242599. The reversal of 3145242533 is 3352425413.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3352425413 = 2789 ⋅1202017.

It can be written as a sum of positive squares in 2 ways, for example, as 1179029569 + 1966212964 = 34337^2 + 44342^2 .

It is a cyclic number.

It is not a de Polignac number, because 3145242533 - 2⁴ = 3145242517 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 3145242533.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3145245533) 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, 25780616 + ... + 25780737.

It is an arithmetic number, because the mean of its divisors is an integer number (799200987).

Almost surely, 2^3145242533 is an apocalyptic number.

It is an amenable number.

3145242533 is a deficient number, since it is larger than the sum of its proper divisors (51561415).

3145242533 is an equidigital number, since it uses as much as digits as its factorization.

3145242533 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51561414.

The product of its digits is 43200, while the sum is 32.

The square root of 3145242533 is about 56082.4619020956. The cubic root of 3145242533 is about 1465.1588521074.

Adding to 3145242533 its reverse (3352425413), we get a palindrome (6497667946).

The spelling of 3145242533 in words is "three billion, one hundred forty-five million, two hundred forty-two thousand, five hundred thirty-three".