13231170 has 48 divisors (see below), whose sum is σ = 34732152. Its totient is φ = 3494400.

The previous prime is 13231159. The next prime is 13231171. The reversal of 13231170 is 7113231.

It can be written as a sum of positive squares in 4 ways, for example, as 2082249 + 11148921 = 1443^2 + 3339^2 .

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 (13231171) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9520 + ... + 10820.

Almost surely, 2^13231170 is an apocalyptic number.

13231170 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 13231170, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17366076).

13231170 is an abundant number, since it is smaller than the sum of its proper divisors (21500982).

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

13231170 is a wasteful number, since it uses less digits than its factorization.

13231170 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1427 (or 1424 counting only the distinct ones).

The product of its (nonzero) digits is 126, while the sum is 18.

The square root of 13231170 is about 3637.4675256282. The cubic root of 13231170 is about 236.5190266983.

The spelling of 13231170 in words is "thirteen million, two hundred thirty-one thousand, one hundred seventy".