1312256452 has 24 divisors (see below), whose sum is σ = 2618576856. Its totient is φ = 570029568.

The previous prime is 1312256419. The next prime is 1312256483. The reversal of 1312256452 is 2546522131.

It can be written as a sum of positive squares in 4 ways, for example, as 531948096 + 780308356 = 23064^2 + 27934^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 741343 + ... + 743110.

It is an arithmetic number, because the mean of its divisors is an integer number (109107369).

Almost surely, 2^1312256452 is an apocalyptic number.

It is an amenable number.

1312256452 is a deficient number, since it is larger than the sum of its proper divisors (1306320404).

1312256452 is a wasteful number, since it uses less digits than its factorization.

1312256452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1484487 (or 1484485 counting only the distinct ones).

The product of its digits is 14400, while the sum is 31.

The square root of 1312256452 is about 36225.0804277920. The cubic root of 1312256452 is about 1094.8120586794.

Adding to 1312256452 its reverse (2546522131), we get a palindrome (3858778583).

The spelling of 1312256452 in words is "one billion, three hundred twelve million, two hundred fifty-six thousand, four hundred fifty-two".