1013231 has 4 divisors (see below), whose sum is σ = 1048200. Its totient is φ = 978264.

The previous prime is 1013227. The next prime is 1013237. The reversal of 1013231 is 1323101.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1013231 - 2² = 1013227 is a prime.

It is a super-2 number, since 2×1013231² = 2053274118722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1013237) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17441 + ... + 17498.

It is an arithmetic number, because the mean of its divisors is an integer number (262050).

2^1013231 is an apocalyptic number.

1013231 is a deficient number, since it is larger than the sum of its proper divisors (34969).

1013231 is an equidigital number, since it uses as much as digits as its factorization.

1013231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34968.

The product of its (nonzero) digits is 18, while the sum is 11.

The square root of 1013231 is about 1006.5937611569. The cubic root of 1013231 is about 100.4391024020.

Adding to 1013231 its reverse (1323101), we get a palindrome (2336332).

The spelling of 1013231 in words is "one million, thirteen thousand, two hundred thirty-one".