13011930 has 24 divisors (see below), whose sum is σ = 33831252. Its totient is φ = 3469824.

The previous prime is 13011917. The next prime is 13011937. The reversal of 13011930 is 3911031.

It can be written as a sum of positive squares in 2 ways, for example, as 12341169 + 670761 = 3513^2 + 819^2 .

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

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (13011937) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 72199 + ... + 72378.

Almost surely, 2^13011930 is an apocalyptic number.

13011930 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13011930 is an abundant number, since it is smaller than the sum of its proper divisors (20819322).

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

13011930 is a wasteful number, since it uses less digits than its factorization.

13011930 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 144590 (or 144587 counting only the distinct ones).

The product of its (nonzero) digits is 81, while the sum is 18.

The square root of 13011930 is about 3607.2052894173. The cubic root of 13011930 is about 235.2053735063.

Adding to 13011930 its reverse (3911031), we get a palindrome (16922961).

The spelling of 13011930 in words is "thirteen million, eleven thousand, nine hundred thirty".