1313231224 has 16 divisors (see below), whose sum is σ = 2462733000. Its totient is φ = 656502432.

The previous prime is 1313231177. The next prime is 1313231233. The reversal of 1313231224 is 4221323131.

It is a junction number, because it is equal to n+sod(n) for n = 1313231195 and 1313231204.

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, 55102 + ... + 75250.

Almost surely, 2^1313231224 is an apocalyptic number.

It is an amenable number.

1313231224 is a deficient number, since it is larger than the sum of its proper divisors (1149501776).

1313231224 is a wasteful number, since it uses less digits than its factorization.

1313231224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28302 (or 28298 counting only the distinct ones).

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

The square root of 1313231224 is about 36238.5323102357. The cubic root of 1313231224 is about 1095.0830748117.

Adding to 1313231224 its reverse (4221323131), we get a palindrome (5534554355).

The spelling of 1313231224 in words is "one billion, three hundred thirteen million, two hundred thirty-one thousand, two hundred twenty-four".