312603245 has 6 divisors (see below), whose sum is σ = 375171342. Its totient is φ = 250050968.

The previous prime is 312603241. The next prime is 312603253. The reversal of 312603245 is 542306213.

It can be written as a sum of positive squares in only one way, i.e., 250082596 + 62520649 = 15814^2 + 7907^2 .

It is not a de Polignac number, because 312603245 - 2² = 312603241 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (312603241) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 35582 + ... + 43488.

It is an arithmetic number, because the mean of its divisors is an integer number (62528557).

Almost surely, 2^312603245 is an apocalyptic number.

It is an amenable number.

312603245 is a deficient number, since it is larger than the sum of its proper divisors (62568097).

312603245 is an frugal number, since it uses more digits than its factorization.

312603245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15819 (or 7912 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 26.

The square root of 312603245 is about 17680.5894980908. The cubic root of 312603245 is about 678.6791292658.

Adding to 312603245 its reverse (542306213), we get a palindrome (854909458).

The spelling of 312603245 in words is "three hundred twelve million, six hundred three thousand, two hundred forty-five".