220312430 has 64 divisors (see below), whose sum is σ = 442870848. Its totient is φ = 78382080.

The previous prime is 220312409. The next prime is 220312447. The reversal of 220312430 is 34213022.

It is a junction number, because it is equal to n+sod(n) for n = 220312399 and 220312408.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 783890 + ... + 784170.

It is an arithmetic number, because the mean of its divisors is an integer number (6919857).

Almost surely, 2^220312430 is an apocalyptic number.

220312430 is an abundant number, since it is smaller than the sum of its proper divisors (222558418).

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

220312430 is a wasteful number, since it uses less digits than its factorization.

220312430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 501.

The product of its (nonzero) digits is 288, while the sum is 17.

The square root of 220312430 is about 14842.9252507718. The cubic root of 220312430 is about 603.9667083240.

Adding to 220312430 its reverse (34213022), we get a palindrome (254525452).

The spelling of 220312430 in words is "two hundred twenty million, three hundred twelve thousand, four hundred thirty".