400321234321 has 8 divisors (see below), whose sum is σ = 410729253440. Its totient is φ = 389963134512.

The previous prime is 400321234301. The next prime is 400321234349. The reversal of 400321234321 is 123432123004.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 400321234321 - 2⁵ = 400321234289 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (400321234301) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12463581 + ... + 12495658.

It is an arithmetic number, because the mean of its divisors is an integer number (51341156680).

Almost surely, 2^400321234321 is an apocalyptic number.

It is an amenable number.

400321234321 is a deficient number, since it is larger than the sum of its proper divisors (10408019119).

400321234321 is a wasteful number, since it uses less digits than its factorization.

400321234321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24959655.

The product of its (nonzero) digits is 3456, while the sum is 25.

Adding to 400321234321 its reverse (123432123004), we get a palindrome (523753357325).

The spelling of 400321234321 in words is "four hundred billion, three hundred twenty-one million, two hundred thirty-four thousand, three hundred twenty-one".