400131052 has 6 divisors (see below), whose sum is σ = 700229348. Its totient is φ = 200065524.

The previous prime is 400131049. The next prime is 400131071. The reversal of 400131052 is 250131004.

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 as a sum of consecutive naturals, namely, 50016378 + ... + 50016385.

Almost surely, 2^400131052 is an apocalyptic number.

It is an amenable number.

400131052 is a deficient number, since it is larger than the sum of its proper divisors (300098296).

400131052 is a wasteful number, since it uses less digits than its factorization.

400131052 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100032767 (or 100032765 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 16.

The square root of 400131052 is about 20003.2760316904. The cubic root of 400131052 is about 736.8867575579.

Adding to 400131052 its reverse (250131004), we get a palindrome (650262056).

It can be divided in two parts, 4001 and 31052, that added together give a palindrome (35053).

The spelling of 400131052 in words is "four hundred million, one hundred thirty-one thousand, fifty-two".