400433310423 has 64 divisors (see below), whose sum is σ = 620513136000. Its totient is φ = 254899233792.

The previous prime is 400433310401. The next prime is 400433310427. The reversal of 400433310423 is 324013334004.

It is not a de Polignac number, because 400433310423 - 2⁶ = 400433310359 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400433310427) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 28848961 + ... + 28862837.

It is an arithmetic number, because the mean of its divisors is an integer number (9695517750).

Almost surely, 2^400433310423 is an apocalyptic number.

400433310423 is a deficient number, since it is larger than the sum of its proper divisors (220079825577).

400433310423 is a wasteful number, since it uses less digits than its factorization.

400433310423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14321 (or 14315 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 27.

Adding to 400433310423 its reverse (324013334004), we get a palindrome (724446644427).

The spelling of 400433310423 in words is "four hundred billion, four hundred thirty-three million, three hundred ten thousand, four hundred twenty-three".