1216373 has 2 divisors, whose sum is σ = 1216374. Its totient is φ = 1216372.

The previous prime is 1216351. The next prime is 1216379. The reversal of 1216373 is 3736121.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1162084 + 54289 = 1078^2 + 233^2 .

It is a cyclic number.

It is not a de Polignac number, because 1216373 - 2¹⁰ = 1215349 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1216379) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 608186 + 608187.

It is an arithmetic number, because the mean of its divisors is an integer number (608187).

2^1216373 is an apocalyptic number.

It is an amenable number.

1216373 is a deficient number, since it is larger than the sum of its proper divisors (1).

1216373 is an equidigital number, since it uses as much as digits as its factorization.

1216373 is an evil number, because the sum of its binary digits is even.

The product of its digits is 756, while the sum is 23.

The square root of 1216373 is about 1102.8930138504. The cubic root of 1216373 is about 106.7469783619.

The spelling of 1216373 in words is "one million, two hundred sixteen thousand, three hundred seventy-three".