13309012 has 6 divisors (see below), whose sum is σ = 23290778. Its totient is φ = 6654504.

The previous prime is 13309007. The next prime is 13309031. The reversal of 13309012 is 21090331.

It can be written as a sum of positive squares in only one way, i.e., 13278736 + 30276 = 3644^2 + 174^2 .

It is a super-2 number, since 2×13309012² = 354259600832288, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1663623 + ... + 1663630.

Almost surely, 2^13309012 is an apocalyptic number.

It is an amenable number.

13309012 is a deficient number, since it is larger than the sum of its proper divisors (9981766).

13309012 is a wasteful number, since it uses less digits than its factorization.

13309012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3327257 (or 3327255 counting only the distinct ones).

The product of its (nonzero) digits is 162, while the sum is 19.

The square root of 13309012 is about 3648.1518608742. The cubic root of 13309012 is about 236.9819518976.

Adding to 13309012 its reverse (21090331), we get a palindrome (34399343).

The spelling of 13309012 in words is "thirteen million, three hundred nine thousand, twelve".