13231000 has 64 divisors (see below), whose sum is σ = 31505760. Its totient is φ = 5200000.

The previous prime is 13230991. The next prime is 13231019. The reversal of 13231000 is 13231.

13231000 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×13231000² = 350118722000000, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 100935 + ... + 101065.

Almost surely, 2^13231000 is an apocalyptic number.

13231000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13231000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15752880).

13231000 is an abundant number, since it is smaller than the sum of its proper divisors (18274760).

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

13231000 is a wasteful number, since it uses less digits than its factorization.

13231000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 253 (or 239 counting only the distinct ones).

The product of its (nonzero) digits is 18, while the sum is 10.

The square root of 13231000 is about 3637.4441576470. Note that the first 3 decimals coincide. The cubic root of 13231000 is about 236.5180137265.

Adding to 13231000 its reverse (13231), we get a palindrome (13244231).

13231000 divided by its reverse (13231) gives a cube (1000 = 10³).

The spelling of 13231000 in words is "thirteen million, two hundred thirty-one thousand".