321203231452 has 24 divisors (see below), whose sum is σ = 562526659296. Its totient is φ = 160481384448.

The previous prime is 321203231411. The next prime is 321203231473. The reversal of 321203231452 is 254132302123.

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 321203231452.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 47004228 + ... + 47011060.

It is an arithmetic number, because the mean of its divisors is an integer number (23438610804).

Almost surely, 2^321203231452 is an apocalyptic number.

It is an amenable number.

321203231452 is a deficient number, since it is larger than the sum of its proper divisors (241323427844).

321203231452 is a wasteful number, since it uses less digits than its factorization.

321203231452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13917 (or 13915 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 28.

Adding to 321203231452 its reverse (254132302123), we get a palindrome (575335533575).

The spelling of 321203231452 in words is "three hundred twenty-one billion, two hundred three million, two hundred thirty-one thousand, four hundred fifty-two".