3145212520 has 16 divisors (see below), whose sum is σ = 7076728260. Its totient is φ = 1258084992.

The previous prime is 3145212509. The next prime is 3145212523. The reversal of 3145212520 is 252125413.

It can be written as a sum of positive squares in 2 ways, for example, as 3140257444 + 4955076 = 56038^2 + 2226^2 .

It is not an unprimeable number, because it can be changed into a prime (3145212523) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 39315117 + ... + 39315196.

Almost surely, 2^3145212520 is an apocalyptic number.

It is an amenable number.

3145212520 is an abundant number, since it is smaller than the sum of its proper divisors (3931515740).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3145212520 is a wasteful number, since it uses less digits than its factorization.

3145212520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78630324 (or 78630320 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 25.

The square root of 3145212520 is about 56082.1943222624. The cubic root of 3145212520 is about 1465.1541917405.

Adding to 3145212520 its reverse (252125413), we get a palindrome (3397337933).

The spelling of 3145212520 in words is "three billion, one hundred forty-five million, two hundred twelve thousand, five hundred twenty".