1243323430 has 32 divisors (see below), whose sum is σ = 2300866560. Its totient is φ = 483496800.

The previous prime is 1243323391. The next prime is 1243323451. The reversal of 1243323430 is 343233421.

It is a junction number, because it is equal to n+sod(n) for n = 1243323395 and 1243323404.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 62211 + ... + 79729.

It is an arithmetic number, because the mean of its divisors is an integer number (71902080).

Almost surely, 2^1243323430 is an apocalyptic number.

1243323430 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1243323430 is a deficient number, since it is larger than the sum of its proper divisors (1057543130).

1243323430 is a wasteful number, since it uses less digits than its factorization.

1243323430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17724.

The product of its (nonzero) digits is 5184, while the sum is 25.

The square root of 1243323430 is about 35260.7916814129. The cubic root of 1243323430 is about 1075.2960223169.

Adding to 1243323430 its reverse (343233421), we get a palindrome (1586556851).

Subtracting from 1243323430 its reverse (343233421), we obtain a palindrome (900090009).

The spelling of 1243323430 in words is "one billion, two hundred forty-three million, three hundred twenty-three thousand, four hundred thirty".