321423150400 has 168 divisors, whose sum is σ = 866022204960. Its totient is φ = 116444928000.

The previous prime is 321423150371. The next prime is 321423150427. The reversal of 321423150400 is 4051324123.

It is a super-2 number, since 2×321423150400² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4700455 + ... + 4768345.

Almost surely, 2^321423150400 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 321423150400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (433011102480).

321423150400 is an abundant number, since it is smaller than the sum of its proper divisors (544599054560).

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

321423150400 is a wasteful number, since it uses less digits than its factorization.

321423150400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68193 (or 68178 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 25.

Adding to 321423150400 its reverse (4051324123), we get a palindrome (325474474523).

The spelling of 321423150400 in words is "three hundred twenty-one billion, four hundred twenty-three million, one hundred fifty thousand, four hundred".