13020237 has 8 divisors (see below), whose sum is σ = 19289280. Its totient is φ = 8680140.

The previous prime is 13020233. The next prime is 13020251. The reversal of 13020237 is 73202031.

13020237 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 13020237 - 2² = 13020233 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13020233) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 241089 + ... + 241142.

It is an arithmetic number, because the mean of its divisors is an integer number (2411160).

Almost surely, 2^13020237 is an apocalyptic number.

It is an amenable number.

13020237 is a deficient number, since it is larger than the sum of its proper divisors (6269043).

13020237 is an equidigital number, since it uses as much as digits as its factorization.

13020237 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 482240 (or 482234 counting only the distinct ones).

The product of its (nonzero) digits is 252, while the sum is 18.

The square root of 13020237 is about 3608.3565511185. The cubic root of 13020237 is about 235.2554156701.

Adding to 13020237 its reverse (73202031), we get a palindrome (86222268).

The spelling of 13020237 in words is "thirteen million, twenty thousand, two hundred thirty-seven".