1213463 has 4 divisors (see below), whose sum is σ = 1216248. Its totient is φ = 1210680.

The previous prime is 1213451. The next prime is 1213469. The reversal of 1213463 is 3643121.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3643121 = 197 ⋅18493.

It is a cyclic number.

It is not a de Polignac number, because 1213463 - 2¹⁰ = 1212439 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1213469) 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, 581 + ... + 1662.

It is an arithmetic number, because the mean of its divisors is an integer number (304062).

2^1213463 is an apocalyptic number.

1213463 is a deficient number, since it is larger than the sum of its proper divisors (2785).

1213463 is an equidigital number, since it uses as much as digits as its factorization.

1213463 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2784.

The product of its digits is 432, while the sum is 20.

The square root of 1213463 is about 1101.5729662623. The cubic root of 1213463 is about 106.6617847158.

Adding to 1213463 its reverse (3643121), we get a palindrome (4856584).

The spelling of 1213463 in words is "one million, two hundred thirteen thousand, four hundred sixty-three".