1312313224 has 8 divisors (see below), whose sum is σ = 2460587310. Its totient is φ = 656156608.

The previous prime is 1312313209. The next prime is 1312313237. The reversal of 1312313224 is 4223132131.

It can be written as a sum of positive squares in only one way, i.e., 1121044324 + 191268900 = 33482^2 + 13830^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a junction number, because it is equal to n+sod(n) for n = 1312313195 and 1312313204.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82019569 + ... + 82019584.

Almost surely, 2^1312313224 is an apocalyptic number.

It is an amenable number.

1312313224 is a deficient number, since it is larger than the sum of its proper divisors (1148274086).

1312313224 is a wasteful number, since it uses less digits than its factorization.

1312313224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 164039159 (or 164039155 counting only the distinct ones).

The product of its digits is 864, while the sum is 22.

The square root of 1312313224 is about 36225.8640200617. The cubic root of 1312313224 is about 1094.8278466944.

Adding to 1312313224 its reverse (4223132131), we get a palindrome (5535445355).

The spelling of 1312313224 in words is "one billion, three hundred twelve million, three hundred thirteen thousand, two hundred twenty-four".