400433211023 has 4 divisors (see below), whose sum is σ = 400436234928. Its totient is φ = 400430187120.

The previous prime is 400433210981. The next prime is 400433211071. The reversal of 400433211023 is 320112334004.

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 400433211023 - 2¹⁰ = 400433209999 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 400433211023.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400433213023) 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, 1303763 + ... + 1581348.

It is an arithmetic number, because the mean of its divisors is an integer number (100109058732).

Almost surely, 2^400433211023 is an apocalyptic number.

400433211023 is a deficient number, since it is larger than the sum of its proper divisors (3023905).

400433211023 is a wasteful number, since it uses less digits than its factorization.

400433211023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3023904.

The product of its (nonzero) digits is 1728, while the sum is 23.

Adding to 400433211023 its reverse (320112334004), we get a palindrome (720545545027).

The spelling of 400433211023 in words is "four hundred billion, four hundred thirty-three million, two hundred eleven thousand, twenty-three".