1312243224 has 32 divisors (see below), whose sum is σ = 3334392240. Its totient is φ = 430243200.

The previous prime is 1312243217. The next prime is 1312243241. The reversal of 1312243224 is 4223422131.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 1312243194 and 1312243203.

It is a congruent number.

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, 446707 + ... + 449634.

Almost surely, 2^1312243224 is an apocalyptic number.

It is an amenable number.

1312243224 is an abundant number, since it is smaller than the sum of its proper divisors (2022149016).

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

1312243224 is a wasteful number, since it uses less digits than its factorization.

1312243224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 896411 (or 896407 counting only the distinct ones).

The product of its digits is 2304, while the sum is 24.

The square root of 1312243224 is about 36224.8978466469. The cubic root of 1312243224 is about 1094.8083799720.

Adding to 1312243224 its reverse (4223422131), we get a palindrome (5535665355).

The spelling of 1312243224 in words is "one billion, three hundred twelve million, two hundred forty-three thousand, two hundred twenty-four".