1228351543 has 8 divisors (see below), whose sum is σ = 1232546112. Its totient is φ = 1224165216.

The previous prime is 1228351511. The next prime is 1228351573. The reversal of 1228351543 is 3451538221.

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

It is a cyclic number.

It is not a de Polignac number, because 1228351543 - 2⁵ = 1228351511 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1228351499 and 1228351508.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1228351573) 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, 442546 + ... + 445312.

It is an arithmetic number, because the mean of its divisors is an integer number (154068264).

Almost surely, 2^1228351543 is an apocalyptic number.

1228351543 is a deficient number, since it is larger than the sum of its proper divisors (4194569).

1228351543 is an equidigital number, since it uses as much as digits as its factorization.

1228351543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4121.

The product of its digits is 28800, while the sum is 34.

The square root of 1228351543 is about 35047.8464816314. The cubic root of 1228351543 is about 1070.9624039764.

Adding to 1228351543 its reverse (3451538221), we get a palindrome (4679889764).

The spelling of 1228351543 in words is "one billion, two hundred twenty-eight million, three hundred fifty-one thousand, five hundred forty-three".