400031230 has 16 divisors (see below), whose sum is σ = 722718144. Its totient is φ = 159420960.

The previous prime is 400031221. The next prime is 400031231. The reversal of 400031230 is 32130004.

It is a self number, because there is not a number n which added to its sum of digits gives 400031230.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400031231) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 71097 + ... + 76516.

It is an arithmetic number, because the mean of its divisors is an integer number (45169884).

Almost surely, 2^400031230 is an apocalyptic number.

400031230 is a deficient number, since it is larger than the sum of its proper divisors (322686914).

400031230 is a wasteful number, since it uses less digits than its factorization.

400031230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 147891.

The product of its (nonzero) digits is 72, while the sum is 13.

The square root of 400031230 is about 20000.7807347613. The cubic root of 400031230 is about 736.8254746130.

Adding to 400031230 its reverse (32130004), we get a palindrome (432161234).

The spelling of 400031230 in words is "four hundred million, thirty-one thousand, two hundred thirty".