400311030 has 32 divisors (see below), whose sum is σ = 1097996544. Its totient is φ = 91499616.

The previous prime is 400311017. The next prime is 400311031. The reversal of 400311030 is 30113004.

It is a junction number, because it is equal to n+sod(n) for n = 400310997 and 400311015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400311031) 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, 952912 + ... + 953331.

It is an arithmetic number, because the mean of its divisors is an integer number (34312392).

Almost surely, 2^400311030 is an apocalyptic number.

400311030 is an abundant number, since it is smaller than the sum of its proper divisors (697685514).

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

400311030 is a wasteful number, since it uses less digits than its factorization.

400311030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1906260.

The product of its (nonzero) digits is 36, while the sum is 12.

The square root of 400311030 is about 20007.7742390302. The cubic root of 400311030 is about 736.9972243034.

Adding to 400311030 its reverse (30113004), we get a palindrome (430424034).

The spelling of 400311030 in words is "four hundred million, three hundred eleven thousand, thirty".