400321231323 has 16 divisors (see below), whose sum is σ = 580093815840. Its totient is φ = 244091418624.

The previous prime is 400321231273. The next prime is 400321231381. The reversal of 400321231323 is 323132123004.

It is not a de Polignac number, because 400321231323 - 2⁹ = 400321230811 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 400321231293 and 400321231302.

It is not an unprimeable number, because it can be changed into a prime (400321131323) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 47081286 + ... + 47089787.

It is an arithmetic number, because the mean of its divisors is an integer number (36255863490).

Almost surely, 2^400321231323 is an apocalyptic number.

400321231323 is a deficient number, since it is larger than the sum of its proper divisors (179772584517).

400321231323 is a wasteful number, since it uses less digits than its factorization.

400321231323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94171198.

The product of its (nonzero) digits is 2592, while the sum is 24.

Adding to 400321231323 its reverse (323132123004), we get a palindrome (723453354327).

The spelling of 400321231323 in words is "four hundred billion, three hundred twenty-one million, two hundred thirty-one thousand, three hundred twenty-three".