1213308 has 18 divisors (see below), whose sum is σ = 3067064. Its totient is φ = 404424.

The previous prime is 1213301. The next prime is 1213327. The reversal of 1213308 is 8033121.

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1213301) 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, 16816 + ... + 16887.

2^1213308 is an apocalyptic number.

1213308 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

1213308 is an abundant number, since it is smaller than the sum of its proper divisors (1853756).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1213308 is a wasteful number, since it uses less digits than its factorization.

1213308 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33713 (or 33708 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

The square root of 1213308 is about 1101.5026100741. The cubic root of 1213308 is about 106.6572430911.

Adding to 1213308 its reverse (8033121), we get a palindrome (9246429).

It can be divided in two parts, 1213 and 308, that added together give a square (1521 = 39²).

The spelling of 1213308 in words is "one million, two hundred thirteen thousand, three hundred eight".