3145440505 has 4 divisors (see below), whose sum is σ = 3774528612. Its totient is φ = 2516352400.

The previous prime is 3145440479. The next prime is 3145440517. The reversal of 3145440505 is 5050445413.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1235663104 + 1909777401 = 35152^2 + 43701^2 .

It is not a de Polignac number, because 3145440505 - 2⁷ = 3145440377 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 314544046 + ... + 314544055.

It is an arithmetic number, because the mean of its divisors is an integer number (943632153).

Almost surely, 2^3145440505 is an apocalyptic number.

It is an amenable number.

3145440505 is a deficient number, since it is larger than the sum of its proper divisors (629088107).

3145440505 is an equidigital number, since it uses as much as digits as its factorization.

3145440505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 629088106.

The product of its (nonzero) digits is 24000, while the sum is 31.

The square root of 3145440505 is about 56084.2268824310. The cubic root of 3145440505 is about 1465.1895921155.

Adding to 3145440505 its reverse (5050445413), we get a palindrome (8195885918).

The spelling of 3145440505 in words is "three billion, one hundred forty-five million, four hundred forty thousand, five hundred five".