400131203344 has 20 divisors (see below), whose sum is σ = 783246520924. Its totient is φ = 198003068928.

The previous prime is 400131203327. The next prime is 400131203357. The reversal of 400131203344 is 443302131004.

It can be written as a sum of positive squares in 2 ways, for example, as 157783728400 + 242347474944 = 397220^2 + 492288^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 128906697 + ... + 128909800.

Almost surely, 2^400131203344 is an apocalyptic number.

It is an amenable number.

400131203344 is a deficient number, since it is larger than the sum of its proper divisors (383115317580).

400131203344 is a wasteful number, since it uses less digits than its factorization.

400131203344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 257816602 (or 257816596 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 25.

Adding to 400131203344 its reverse (443302131004), we get a palindrome (843433334348).

The spelling of 400131203344 in words is "four hundred billion, one hundred thirty-one million, two hundred three thousand, three hundred forty-four".