400204314220431 has 16 divisors (see below), whose sum is σ = 609950274050304. Its totient is φ = 228645006340224.

The previous prime is 400204314220307. The next prime is 400204314220433. The reversal of 400204314220431 is 134022413402004.

It is not a de Polignac number, because 400204314220431 - 2¹⁰ = 400204314219407 is a prime.

It is a super-2 number, since 2×400204314220431² (a number of 30 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400204314220433) 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, 1798770045 + ... + 1798992518.

It is an arithmetic number, because the mean of its divisors is an integer number (38121892128144).

Almost surely, 2^{400204314220431} is an apocalyptic number.

400204314220431 is a deficient number, since it is larger than the sum of its proper divisors (209745959829873).

400204314220431 is a wasteful number, since it uses less digits than its factorization.

400204314220431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3597767870.

The product of its (nonzero) digits is 18432, while the sum is 30.

Adding to 400204314220431 its reverse (134022413402004), we get a palindrome (534226727622435).

The spelling of 400204314220431 in words is "four hundred trillion, two hundred four billion, three hundred fourteen million, two hundred twenty thousand, four hundred thirty-one".