1331321230 has 16 divisors (see below), whose sum is σ = 2398559040. Its totient is φ = 532043872.

The previous prime is 1331321207. The next prime is 1331321231. The reversal of 1331321230 is 321231331.

It is a junction number, because it is equal to n+sod(n) for n = 1331321198 and 1331321207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1331321231) 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, 48934 + ... + 71113.

It is an arithmetic number, because the mean of its divisors is an integer number (149909940).

Almost surely, 2^1331321230 is an apocalyptic number.

1331321230 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1331321230 is a deficient number, since it is larger than the sum of its proper divisors (1067237810).

1331321230 is a wasteful number, since it uses less digits than its factorization.

1331321230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 121163.

The product of its (nonzero) digits is 324, while the sum is 19.

The square root of 1331321230 is about 36487.2749050953. The cubic root of 1331321230 is about 1100.0884859948.

Adding to 1331321230 its reverse (321231331), we get a palindrome (1652552561).

It can be divided in two parts, 13313 and 21230, that added together give a palindrome (34543).

The spelling of 1331321230 in words is "one billion, three hundred thirty-one million, three hundred twenty-one thousand, two hundred thirty".