321134020400 has 60 divisors (see below), whose sum is σ = 781290693600. Its totient is φ = 126827600640.

The previous prime is 321134020379. The next prime is 321134020421. The reversal of 321134020400 is 4020431123.

It is an interprime number because it is at equal distance from previous prime (321134020379) and next prime (321134020421).

It is a Harshad number since it is a multiple of its sum of digits (20).

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, 5049635 + ... + 5112834.

It is an arithmetic number, because the mean of its divisors is an integer number (13021511560).

Almost surely, 2^321134020400 is an apocalyptic number.

It is an amenable number.

321134020400 is an abundant number, since it is smaller than the sum of its proper divisors (460156673200).

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

321134020400 is a wasteful number, since it uses less digits than its factorization.

321134020400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10162566 (or 10162555 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 321134020400 its reverse (4020431123), we get a palindrome (325154451523).

The spelling of 321134020400 in words is "three hundred twenty-one billion, one hundred thirty-four million, twenty thousand, four hundred".