1315213 has 2 divisors, whose sum is σ = 1315214. Its totient is φ = 1315212.

The previous prime is 1315211. The next prime is 1315229. The reversal of 1315213 is 3125131.

It is an a-pointer prime, because the next prime (1315229) can be obtained adding 1315213 to its sum of digits (16).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 777924 + 537289 = 882^2 + 733^2 .

It is a cyclic number.

It is not a de Polignac number, because 1315213 - 2¹ = 1315211 is a prime.

Together with 1315211, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1315211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 657606 + 657607.

It is an arithmetic number, because the mean of its divisors is an integer number (657607).

2^1315213 is an apocalyptic number.

It is an amenable number.

1315213 is a deficient number, since it is larger than the sum of its proper divisors (1).

1315213 is an equidigital number, since it uses as much as digits as its factorization.

1315213 is an evil number, because the sum of its binary digits is even.

The product of its digits is 90, while the sum is 16.

The square root of 1315213 is about 1146.8273627709. The cubic root of 1315213 is about 109.5633655333.

The spelling of 1315213 in words is "one million, three hundred fifteen thousand, two hundred thirteen".