1101430243 has 4 divisors (see below), whose sum is σ = 1104698920. Its totient is φ = 1098161568.

The previous prime is 1101430229. The next prime is 1101430271. The reversal of 1101430243 is 3420341011.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1101430243 - 2⁹ = 1101429731 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1101430243.

It is not an unprimeable number, because it can be changed into a prime (1101430943) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1633833 + ... + 1634506.

It is an arithmetic number, because the mean of its divisors is an integer number (276174730).

Almost surely, 2^1101430243 is an apocalyptic number.

1101430243 is a deficient number, since it is larger than the sum of its proper divisors (3268677).

1101430243 is an equidigital number, since it uses as much as digits as its factorization.

1101430243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3268676.

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 1101430243 is about 33187.8026238557. The cubic root of 1101430243 is about 1032.7273190879.

Adding to 1101430243 its reverse (3420341011), we get a palindrome (4521771254).

The spelling of 1101430243 in words is "one billion, one hundred one million, four hundred thirty thousand, two hundred forty-three".