1253143312 has 10 divisors (see below), whose sum is σ = 2427965198. Its totient is φ = 626571648.

The previous prime is 1253143301. The next prime is 1253143337. The reversal of 1253143312 is 2133413521.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 639887616 + 613255696 = 25296^2 + 24764^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39160713 + ... + 39160744.

Almost surely, 2^1253143312 is an apocalyptic number.

It is an amenable number.

1253143312 is a deficient number, since it is larger than the sum of its proper divisors (1174821886).

1253143312 is an equidigital number, since it uses as much as digits as its factorization.

1253143312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78321465 (or 78321459 counting only the distinct ones).

The product of its digits is 2160, while the sum is 25.

The square root of 1253143312 is about 35399.7642930006. The cubic root of 1253143312 is about 1078.1195305997.

Adding to 1253143312 its reverse (2133413521), we get a palindrome (3386556833).

The spelling of 1253143312 in words is "one billion, two hundred fifty-three million, one hundred forty-three thousand, three hundred twelve".