1211413 has 4 divisors (see below), whose sum is σ = 1384480. Its totient is φ = 1038348.

The previous prime is 1211411. The next prime is 1211423. The reversal of 1211413 is 3141121.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 3141121 = 593 ⋅5297.

It is a cyclic number.

It is not a de Polignac number, because 1211413 - 2¹ = 1211411 is a prime.

It is a super-3 number, since 3×1211413³ = 5333323710799865991, which contains 333 as substring.

It is a Duffinian number.

1211413 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 1211393 and 1211402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1211411) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 86523 + ... + 86536.

It is an arithmetic number, because the mean of its divisors is an integer number (346120).

2^1211413 is an apocalyptic number.

It is an amenable number.

1211413 is a deficient number, since it is larger than the sum of its proper divisors (173067).

1211413 is an equidigital number, since it uses as much as digits as its factorization.

1211413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 173066.

The product of its digits is 24, while the sum is 13.

The square root of 1211413 is about 1100.6420853302. The cubic root of 1211413 is about 106.6016867686.

Adding to 1211413 its reverse (3141121), we get a palindrome (4352534).

The spelling of 1211413 in words is "one million, two hundred eleven thousand, four hundred thirteen".