210315401 has 2 divisors, whose sum is σ = 210315402. Its totient is φ = 210315400.

The previous prime is 210315397. The next prime is 210315403. The reversal of 210315401 is 104513012.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 161315401 + 49000000 = 12701^2 + 7000^2 .

It is a cyclic number.

It is not a de Polignac number, because 210315401 - 2² = 210315397 is a prime.

Together with 210315403, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 210315401.

It is not a weakly prime, because it can be changed into another prime (210315403) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105157700 + 105157701.

It is an arithmetic number, because the mean of its divisors is an integer number (105157701).

Almost surely, 2^210315401 is an apocalyptic number.

It is an amenable number.

210315401 is a deficient number, since it is larger than the sum of its proper divisors (1).

210315401 is an equidigital number, since it uses as much as digits as its factorization.

210315401 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 120, while the sum is 17.

The square root of 210315401 is about 14502.2550315460. The cubic root of 210315401 is about 594.6896208569.

Adding to 210315401 its reverse (104513012), we get a palindrome (314828413).

The spelling of 210315401 in words is "two hundred ten million, three hundred fifteen thousand, four hundred one".