1243314243 has 48 divisors (see below), whose sum is σ = 1917417216. Its totient is φ = 774671040.

The previous prime is 1243314239. The next prime is 1243314251. The reversal of 1243314243 is 3424133421.

It is not a de Polignac number, because 1243314243 - 2² = 1243314239 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1243314263) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2177148 + ... + 2177718.

It is an arithmetic number, because the mean of its divisors is an integer number (39946192).

Almost surely, 2^1243314243 is an apocalyptic number.

1243314243 is a deficient number, since it is larger than the sum of its proper divisors (674102973).

1243314243 is a wasteful number, since it uses less digits than its factorization.

1243314243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 824 (or 821 counting only the distinct ones).

The product of its digits is 6912, while the sum is 27.

The square root of 1243314243 is about 35260.6614089980. The cubic root of 1243314243 is about 1075.2933738323.

Adding to 1243314243 its reverse (3424133421), we get a palindrome (4667447664).

The spelling of 1243314243 in words is "one billion, two hundred forty-three million, three hundred fourteen thousand, two hundred forty-three".