400131404 has 12 divisors (see below), whose sum is σ = 701752128. Its totient is φ = 199630800.

The previous prime is 400131373. The next prime is 400131467. The reversal of 400131404 is 404131004.

It is a super-2 number, since 2×400131404² = 320210280934022432, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 106652 + ... + 110339.

It is an arithmetic number, because the mean of its divisors is an integer number (58479344).

Almost surely, 2^400131404 is an apocalyptic number.

It is an amenable number.

400131404 is a deficient number, since it is larger than the sum of its proper divisors (301620724).

400131404 is a wasteful number, since it uses less digits than its factorization.

400131404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 217456 (or 217454 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 400131404 is about 20003.2848302473. The cubic root of 400131404 is about 736.8869736405.

Adding to 400131404 its reverse (404131004), we get a palindrome (804262408).

The spelling of 400131404 in words is "four hundred million, one hundred thirty-one thousand, four hundred four".