1351213 has 2 divisors, whose sum is σ = 1351214. Its totient is φ = 1351212.

The previous prime is 1351199. The next prime is 1351241. The reversal of 1351213 is 3121531.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1295044 + 56169 = 1138^2 + 237^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1351213 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1351243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 675606 + 675607.

It is an arithmetic number, because the mean of its divisors is an integer number (675607).

2^1351213 is an apocalyptic number.

It is an amenable number.

1351213 is a deficient number, since it is larger than the sum of its proper divisors (1).

1351213 is an equidigital number, since it uses as much as digits as its factorization.

1351213 is an odious number, because the sum of its binary digits is odd.

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

The square root of 1351213 is about 1162.4168787488. The cubic root of 1351213 is about 110.5540367552.

Adding to 1351213 its reverse (3121531), we get a palindrome (4472744).

The spelling of 1351213 in words is "one million, three hundred fifty-one thousand, two hundred thirteen".