321140020400 has 60 divisors (see below), whose sum is σ = 771625055544. Its totient is φ = 128441664000.

The previous prime is 321140020391. The next prime is 321140020423. The reversal of 321140020400 is 4020041123.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3996620 + ... + 4076180.

Almost surely, 2^321140020400 is an apocalyptic number.

It is an amenable number.

321140020400 is an abundant number, since it is smaller than the sum of its proper divisors (450485035144).

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

321140020400 is a wasteful number, since it uses less digits than its factorization.

321140020400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89670 (or 89659 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 17.

Adding to 321140020400 its reverse (4020041123), we get a palindrome (325160061523).

The spelling of 321140020400 in words is "three hundred twenty-one billion, one hundred forty million, twenty thousand, four hundred".