1321230412 has 24 divisors (see below), whose sum is σ = 2507878800. Its totient is φ = 606589440.

The previous prime is 1321230397. The next prime is 1321230433. The reversal of 1321230412 is 2140321231.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 1321230412.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 234162 + ... + 239737.

It is an arithmetic number, because the mean of its divisors is an integer number (104494950).

Almost surely, 2^1321230412 is an apocalyptic number.

It is an amenable number.

1321230412 is a deficient number, since it is larger than the sum of its proper divisors (1186648388).

1321230412 is a wasteful number, since it uses less digits than its factorization.

1321230412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 473961 (or 473959 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 1321230412 is about 36348.7332929223. The cubic root of 1321230412 is about 1097.3020415994.

Adding to 1321230412 its reverse (2140321231), we get a palindrome (3461551643).

The spelling of 1321230412 in words is "one billion, three hundred twenty-one million, two hundred thirty thousand, four hundred twelve".