1213983 has 6 divisors (see below), whose sum is σ = 1753544. Its totient is φ = 809316.

The previous prime is 1213981. The next prime is 1214011. The reversal of 1213983 is 3893121.

It is not a de Polignac number, because 1213983 - 2¹ = 1213981 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 (1213981) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 67435 + ... + 67452.

2^1213983 is an apocalyptic number.

1213983 is a deficient number, since it is larger than the sum of its proper divisors (539561).

1213983 is a wasteful number, since it uses less digits than its factorization.

1213983 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 134893 (or 134890 counting only the distinct ones).

The product of its digits is 1296, while the sum is 27.

The square root of 1213983 is about 1101.8089671082. The cubic root of 1213983 is about 106.6770183096.

The spelling of 1213983 in words is "one million, two hundred thirteen thousand, nine hundred eighty-three".