320421231400 has 24 divisors (see below), whose sum is σ = 744979363470. Its totient is φ = 128168492480.

The previous prime is 320421231353. The next prime is 320421231421. The reversal of 320421231400 is 4132124023.

It can be written as a sum of positive squares in 3 ways, for example, as 123744947076 + 196676284324 = 351774^2 + 443482^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 801052879 + ... + 801053278.

Almost surely, 2^320421231400 is an apocalyptic number.

It is an amenable number.

320421231400 is an abundant number, since it is smaller than the sum of its proper divisors (424558132070).

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

320421231400 is a wasteful number, since it uses less digits than its factorization.

320421231400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1602106173 (or 1602106164 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 22.

Adding to 320421231400 its reverse (4132124023), we get a palindrome (324553355423).

The spelling of 320421231400 in words is "three hundred twenty billion, four hundred twenty-one million, two hundred thirty-one thousand, four hundred".