1243213324 has 6 divisors (see below), whose sum is σ = 2175623324. Its totient is φ = 621606660.

The previous prime is 1243213241. The next prime is 1243213327. The reversal of 1243213324 is 4233123421.

It is a super-2 number, since 2×1243213324² = 3091158737942257952, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1243213327) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 155401662 + ... + 155401669.

Almost surely, 2^1243213324 is an apocalyptic number.

It is an amenable number.

1243213324 is a deficient number, since it is larger than the sum of its proper divisors (932410000).

1243213324 is a wasteful number, since it uses less digits than its factorization.

1243213324 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 310803335 (or 310803333 counting only the distinct ones).

The product of its digits is 3456, while the sum is 25.

The square root of 1243213324 is about 35259.2303376010. The cubic root of 1243213324 is about 1075.2642794263.

Adding to 1243213324 its reverse (4233123421), we get a palindrome (5476336745).

The spelling of 1243213324 in words is "one billion, two hundred forty-three million, two hundred thirteen thousand, three hundred twenty-four".