1312140224 has 28 divisors (see below), whose sum is σ = 2687775168. Its totient is φ = 634905600.

The previous prime is 1312140211. The next prime is 1312140259. The reversal of 1312140224 is 4220412131.

It is a junction number, because it is equal to n+sod(n) for n = 1312140196 and 1312140205.

It is a congruent 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, 328697 + ... + 332664.

Almost surely, 2^1312140224 is an apocalyptic number.

It is an amenable number.

1312140224 is an abundant number, since it is smaller than the sum of its proper divisors (1375634944).

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

1312140224 is an equidigital number, since it uses as much as digits as its factorization.

1312140224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 661404 (or 661394 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 1312140224 is about 36223.4761446220. The cubic root of 1312140224 is about 1094.7797348215.

Adding to 1312140224 its reverse (4220412131), we get a palindrome (5532552355).

The spelling of 1312140224 in words is "one billion, three hundred twelve million, one hundred forty thousand, two hundred twenty-four".