405131230 has 32 divisors (see below), whose sum is σ = 834805440. Its totient is φ = 138670080.

The previous prime is 405131203. The next prime is 405131231. The reversal of 405131230 is 32131504.

It is a junction number, because it is equal to n+sod(n) for n = 405131198 and 405131207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (405131231) 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, 40356 + ... + 49384.

It is an arithmetic number, because the mean of its divisors is an integer number (26087670).

Almost surely, 2^405131230 is an apocalyptic number.

405131230 is an abundant number, since it is smaller than the sum of its proper divisors (429674210).

405131230 is a wasteful number, since it uses less digits than its factorization.

405131230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9684.

The product of its (nonzero) digits is 360, while the sum is 19.

The square root of 405131230 is about 20127.8719689887. The cubic root of 405131230 is about 739.9435250302.

Adding to 405131230 its reverse (32131504), we get a palindrome (437262734).

The spelling of 405131230 in words is "four hundred five million, one hundred thirty-one thousand, two hundred thirty".