400321322104 has 64 divisors (see below), whose sum is σ = 841177864800. Its totient is φ = 177002496000.

The previous prime is 400321322077. The next prime is 400321322119. The reversal of 400321322104 is 401223123004.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15619252 + ... + 15644860.

Almost surely, 2^400321322104 is an apocalyptic number.

400321322104 is a gapful number since it is divisible by the number (44) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 400321322104, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (420588932400).

400321322104 is an abundant number, since it is smaller than the sum of its proper divisors (440856542696).

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

400321322104 is a wasteful number, since it uses less digits than its factorization.

400321322104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30464 (or 30460 counting only the distinct ones).

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

Adding to 400321322104 its reverse (401223123004), we get a palindrome (801544445108).

Subtracting 400321322104 from its reverse (401223123004), we obtain a square (901800900 = 30030²).

The spelling of 400321322104 in words is "four hundred billion, three hundred twenty-one million, three hundred twenty-two thousand, one hundred four".