400313532 has 48 divisors (see below), whose sum is σ = 945252000. Its totient is φ = 131850240.

The previous prime is 400313521. The next prime is 400313539. The reversal of 400313532 is 235313004.

It is a junction number, because it is equal to n+sod(n) for n = 400313499 and 400313508.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400313539) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 430444 + ... + 431372.

It is an arithmetic number, because the mean of its divisors is an integer number (19692750).

Almost surely, 2^400313532 is an apocalyptic number.

It is an amenable number.

400313532 is an abundant number, since it is smaller than the sum of its proper divisors (544938468).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

400313532 is a wasteful number, since it uses less digits than its factorization.

400313532 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1326 (or 1324 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 21.

The square root of 400313532 is about 20007.8367646280. The cubic root of 400313532 is about 736.9987597455.

Adding to 400313532 its reverse (235313004), we get a palindrome (635626536).

The spelling of 400313532 in words is "four hundred million, three hundred thirteen thousand, five hundred thirty-two".