312220130 has 32 divisors (see below), whose sum is σ = 600357744. Its totient is φ = 116494336.

The previous prime is 312220121. The next prime is 312220159. The reversal of 312220130 is 31022213.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 109641841 + 202578289 = 10471^2 + 14233^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11084 + ... + 27336.

Almost surely, 2^312220130 is an apocalyptic number.

312220130 is a deficient number, since it is larger than the sum of its proper divisors (288137614).

312220130 is a wasteful number, since it uses less digits than its factorization.

312220130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16390.

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 312220130 is about 17669.7518375330. The cubic root of 312220130 is about 678.4017612265.

Adding to 312220130 its reverse (31022213), we get a palindrome (343242343).

The spelling of 312220130 in words is "three hundred twelve million, two hundred twenty thousand, one hundred thirty".