1230303522 has 64 divisors (see below), whose sum is σ = 2900136960. Its totient is φ = 340676544.

The previous prime is 1230303521. The next prime is 1230303589. The reversal of 1230303522 is 2253030321.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (1230303521) 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 31 ways as a sum of consecutive naturals, for example, 181429 + ... + 188087.

It is an arithmetic number, because the mean of its divisors is an integer number (45314640).

Almost surely, 2^1230303522 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1230303522, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1450068480).

1230303522 is an abundant number, since it is smaller than the sum of its proper divisors (1669833438).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1230303522 is a wasteful number, since it uses less digits than its factorization.

1230303522 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6807.

The product of its (nonzero) digits is 1080, while the sum is 21.

The square root of 1230303522 is about 35075.6827731122. The cubic root of 1230303522 is about 1071.5293941490.

Adding to 1230303522 its reverse (2253030321), we get a palindrome (3483333843).

The spelling of 1230303522 in words is "one billion, two hundred thirty million, three hundred three thousand, five hundred twenty-two".