400204434343 has 4 divisors (see below), whose sum is σ = 457376496400. Its totient is φ = 343032372288.

The previous prime is 400204434341. The next prime is 400204434379. The reversal of 400204434343 is 343434402004.

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 400204434343 - 2¹ = 400204434341 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 (400204434341) 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, 28586031018 + ... + 28586031031.

It is an arithmetic number, because the mean of its divisors is an integer number (114344124100).

Almost surely, 2^400204434343 is an apocalyptic number.

400204434343 is a deficient number, since it is larger than the sum of its proper divisors (57172062057).

400204434343 is an equidigital number, since it uses as much as digits as its factorization.

400204434343 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57172062056.

The product of its (nonzero) digits is 55296, while the sum is 31.

Adding to 400204434343 its reverse (343434402004), we get a palindrome (743638836347).

The spelling of 400204434343 in words is "four hundred billion, two hundred four million, four hundred thirty-four thousand, three hundred forty-three".