1243230363 has 20 divisors (see below), whose sum is σ = 1954919560. Its totient is φ = 785197152.

The previous prime is 1243230361. The next prime is 1243230367. The reversal of 1243230363 is 3630323421.

It is a happy number.

It is not a de Polignac number, because 1243230363 - 2¹ = 1243230361 is a prime.

It is a super-2 number, since 2×1243230363² = 3091243470970223538, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1243230361) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 402370 + ... + 405447.

It is an arithmetic number, because the mean of its divisors is an integer number (97745978).

Almost surely, 2^1243230363 is an apocalyptic number.

1243230363 is a deficient number, since it is larger than the sum of its proper divisors (711689197).

1243230363 is an equidigital number, since it uses as much as digits as its factorization.

1243230363 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 807848 (or 807839 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 27.

The square root of 1243230363 is about 35259.4719614460. The cubic root of 1243230363 is about 1075.2691917890.

Adding to 1243230363 its reverse (3630323421), we get a palindrome (4873553784).

The spelling of 1243230363 in words is "one billion, two hundred forty-three million, two hundred thirty thousand, three hundred sixty-three".