400555103323 has 4 divisors (see below), whose sum is σ = 409870338328. Its totient is φ = 391239868320.

The previous prime is 400555103321. The next prime is 400555103339. The reversal of 400555103323 is 323301555004.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 400555103323 - 2¹ = 400555103321 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (400555103321) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4657617438 + ... + 4657617523.

It is an arithmetic number, because the mean of its divisors is an integer number (102467584582).

Almost surely, 2^400555103323 is an apocalyptic number.

400555103323 is a gapful number since it is divisible by the number (43) formed by its first and last digit.

400555103323 is a deficient number, since it is larger than the sum of its proper divisors (9315235005).

400555103323 is an equidigital number, since it uses as much as digits as its factorization.

400555103323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9315235004.

The product of its (nonzero) digits is 27000, while the sum is 31.

Adding to 400555103323 its reverse (323301555004), we get a palindrome (723856658327).

The spelling of 400555103323 in words is "four hundred billion, five hundred fifty-five million, one hundred three thousand, three hundred twenty-three".