210040313 has 6 divisors (see below), whose sum is σ = 244332666. Its totient is φ = 180034512.

The previous prime is 210040309. The next prime is 210040319. The reversal of 210040313 is 313040012.

It can be written as a sum of positive squares in only one way, i.e., 209757289 + 283024 = 14483^2 + 532^2 .

It is not a de Polignac number, because 210040313 - 2² = 210040309 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (210040319) 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, 2143220 + ... + 2143317.

It is an arithmetic number, because the mean of its divisors is an integer number (40722111).

Almost surely, 2^210040313 is an apocalyptic number.

It is an amenable number.

210040313 is a deficient number, since it is larger than the sum of its proper divisors (34292353).

210040313 is an equidigital number, since it uses as much as digits as its factorization.

210040313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4286551 (or 4286544 counting only the distinct ones).

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

The square root of 210040313 is about 14492.7676100875. The cubic root of 210040313 is about 594.4302273389.

Adding to 210040313 its reverse (313040012), we get a palindrome (523080325).

The spelling of 210040313 in words is "two hundred ten million, forty thousand, three hundred thirteen".