312220125 has 96 divisors (see below), whose sum is σ = 659602944. Its totient is φ = 139104000.

The previous prime is 312220121. The next prime is 312220159. The reversal of 312220125 is 521022213.

It is not a de Polignac number, because 312220125 - 2² = 312220121 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 312220098 and 312220107.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (312220121) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 322392 + ... + 323358.

It is an arithmetic number, because the mean of its divisors is an integer number (6870864).

Almost surely, 2^312220125 is an apocalyptic number.

312220125 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

312220125 is an abundant number, since it is smaller than the sum of its proper divisors (347382819).

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

312220125 is a wasteful number, since it uses less digits than its factorization.

312220125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1036 (or 1023 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 312220125 is about 17669.7516960482. The cubic root of 312220125 is about 678.4017576051.

Adding to 312220125 its reverse (521022213), we get a palindrome (833242338).

The spelling of 312220125 in words is "three hundred twelve million, two hundred twenty thousand, one hundred twenty-five".