1243320207 has 8 divisors (see below), whose sum is σ = 1657943040. Its totient is φ = 828788760.

The previous prime is 1243320191. The next prime is 1243320229. The reversal of 1243320207 is 7020233421.

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

It is not a de Polignac number, because 1243320207 - 2⁴ = 1243320191 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1243320307) 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 7 ways as a sum of consecutive naturals, for example, 20832 + ... + 54042.

It is an arithmetic number, because the mean of its divisors is an integer number (207242880).

Almost surely, 2^1243320207 is an apocalyptic number.

1243320207 is a deficient number, since it is larger than the sum of its proper divisors (414622833).

1243320207 is a wasteful number, since it uses less digits than its factorization.

1243320207 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45693.

The product of its (nonzero) digits is 2016, while the sum is 24.

The square root of 1243320207 is about 35260.7459790629. The cubic root of 1243320207 is about 1075.2950931722.

Adding to 1243320207 its reverse (7020233421), we get a palindrome (8263553628).

It can be divided in two parts, 12433 and 20207, that added together give a triangular number (32640 = T₂₅₅).

The spelling of 1243320207 in words is "one billion, two hundred forty-three million, three hundred twenty thousand, two hundred seven".