400431224311 has 4 divisors (see below), whose sum is σ = 400441785352. Its totient is φ = 400420663272.

The previous prime is 400431224261. The next prime is 400431224327. The reversal of 400431224311 is 113422134004.

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 400431224311 - 2²⁵ = 400397669879 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400431224411) 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, 5223441 + ... + 5299546.

It is an arithmetic number, because the mean of its divisors is an integer number (100110446338).

Almost surely, 2^400431224311 is an apocalyptic number.

400431224311 is a deficient number, since it is larger than the sum of its proper divisors (10561041).

400431224311 is a wasteful number, since it uses less digits than its factorization.

400431224311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10561040.

The product of its (nonzero) digits is 2304, while the sum is 25.

Adding to 400431224311 its reverse (113422134004), we get a palindrome (513853358315).

The spelling of 400431224311 in words is "four hundred billion, four hundred thirty-one million, two hundred twenty-four thousand, three hundred eleven".