312510313 has 4 divisors (see below), whose sum is σ = 318406788. Its totient is φ = 306613840.

The previous prime is 312510301. The next prime is 312510353. The reversal of 312510313 is 313015213.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 313015213 = 7 ⋅44716459.

It can be written as a sum of positive squares in 2 ways, for example, as 187361344 + 125148969 = 13688^2 + 11187^2 .

It is a cyclic number.

It is not a de Polignac number, because 312510313 - 2¹³ = 312502121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (312510353) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2948158 + ... + 2948263.

It is an arithmetic number, because the mean of its divisors is an integer number (79601697).

Almost surely, 2^312510313 is an apocalyptic number.

It is an amenable number.

312510313 is a deficient number, since it is larger than the sum of its proper divisors (5896475).

312510313 is an equidigital number, since it uses as much as digits as its factorization.

312510313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5896474.

The product of its (nonzero) digits is 270, while the sum is 19.

The square root of 312510313 is about 17677.9612229465. The cubic root of 312510313 is about 678.6118690770.

Adding to 312510313 its reverse (313015213), we get a palindrome (625525526).

The spelling of 312510313 in words is "three hundred twelve million, five hundred ten thousand, three hundred thirteen".