1211423 has 2 divisors, whose sum is σ = 1211424. Its totient is φ = 1211422.

The previous prime is 1211411. The next prime is 1211443. The reversal of 1211423 is 3241121.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1211423 - 2⁴ = 1211407 is a prime.

It is a super-3 number, since 3×1211423³ = 5333455788821231901, which contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1211398 and 1211407.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1211443) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 605711 + 605712.

It is an arithmetic number, because the mean of its divisors is an integer number (605712).

2^1211423 is an apocalyptic number.

1211423 is a deficient number, since it is larger than the sum of its proper divisors (1).

1211423 is an equidigital number, since it uses as much as digits as its factorization.

1211423 is an evil number, because the sum of its binary digits is even.

The product of its digits is 48, while the sum is 14.

The square root of 1211423 is about 1100.6466281237. The cubic root of 1211423 is about 106.6019800939.

Adding to 1211423 its reverse (3241121), we get a palindrome (4452544).

The spelling of 1211423 in words is "one million, two hundred eleven thousand, four hundred twenty-three".