1001231 has 8 divisors (see below), whose sum is σ = 1248384. Its totient is φ = 780120.

The previous prime is 1001219. The next prime is 1001237. The reversal of 1001231 is 1321001.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1001231 - 2¹⁴ = 984847 is a prime.

It is a super-2 number, since 2×1001231² = 2004927030722, which contains 22 as substring.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1001237) 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, 6425 + ... + 6578.

It is an arithmetic number, because the mean of its divisors is an integer number (156048).

2^1001231 is an apocalyptic number.

1001231 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1001231 is a deficient number, since it is larger than the sum of its proper divisors (247153).

1001231 is a wasteful number, since it uses less digits than its factorization.

1001231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13021.

The product of its (nonzero) digits is 6, while the sum is 8.

The square root of 1001231 is about 1000.6153106964. The cubic root of 1001231 is about 100.0410165075.

Adding to 1001231 its reverse (1321001), we get a palindrome (2322232).

It can be divided in two parts, 100 and 1231, that added together give a palindrome (1331).

The spelling of 1001231 in words is "one million, one thousand, two hundred thirty-one".