1243200011 has 8 divisors (see below), whose sum is σ = 1271409600. Its totient is φ = 1215302400.

The previous prime is 1243199983. The next prime is 1243200017. The reversal of 1243200011 is 1100023421.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1243200011 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1243200017) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 69926 + ... + 85883.

It is an arithmetic number, because the mean of its divisors is an integer number (158926200).

Almost surely, 2^1243200011 is an apocalyptic number.

1243200011 is a deficient number, since it is larger than the sum of its proper divisors (28209589).

1243200011 is a wasteful number, since it uses less digits than its factorization.

1243200011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 155989.

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 1243200011 is about 35259.0415496508. The cubic root of 1243200011 is about 1075.2604412423.

Adding to 1243200011 its reverse (1100023421), we get a palindrome (2343223432).

The spelling of 1243200011 in words is "one billion, two hundred forty-three million, two hundred thousand, eleven".