320203121400 has 144 divisors (see below), whose sum is σ = 1075510683000. Its totient is φ = 85374647040.

The previous prime is 320203121383. The next prime is 320203121411. The reversal of 320203121400 is 4121302023.

320203121400 is a `hidden beast` number, since 320 + 20 + 312 + 14 + 0 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 22001326 + ... + 22015874.

Almost surely, 2^320203121400 is an apocalyptic number.

320203121400 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

320203121400 is an abundant number, since it is smaller than the sum of its proper divisors (755307561600).

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

320203121400 is a wasteful number, since it uses less digits than its factorization.

320203121400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26798 (or 26786 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

Adding to 320203121400 its reverse (4121302023), we get a palindrome (324324423423).

The spelling of 320203121400 in words is "three hundred twenty billion, two hundred three million, one hundred twenty-one thousand, four hundred".