1213357 has 2 divisors, whose sum is σ = 1213358. Its totient is φ = 1213356.

The previous prime is 1213339. The next prime is 1213367. The reversal of 1213357 is 7533121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1212201 + 1156 = 1101^2 + 34^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1213357 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1213327) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 606678 + 606679.

It is an arithmetic number, because the mean of its divisors is an integer number (606679).

2^1213357 is an apocalyptic number.

It is an amenable number.

1213357 is a deficient number, since it is larger than the sum of its proper divisors (1).

1213357 is an equidigital number, since it uses as much as digits as its factorization.

1213357 is an evil number, because the sum of its binary digits is even.

The product of its digits is 630, while the sum is 22.

The square root of 1213357 is about 1101.5248521935. The cubic root of 1213357 is about 106.6586788723.

Adding to 1213357 its reverse (7533121), we get a palindrome (8746478).

The spelling of 1213357 in words is "one million, two hundred thirteen thousand, three hundred fifty-seven".