1000321231 has 24 divisors (see below), whose sum is σ = 1264734240. Its totient is φ = 784147392.

The previous prime is 1000321213. The next prime is 1000321241. The reversal of 1000321231 is 1321230001.

It is not a de Polignac number, because 1000321231 - 2⁷ = 1000321103 is a prime.

It is a super-2 number, since 2×1000321231² = 2001285130378710722, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1000321211) 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, 62230 + ... + 76636.

It is an arithmetic number, because the mean of its divisors is an integer number (52697260).

Almost surely, 2^1000321231 is an apocalyptic number.

1000321231 is a deficient number, since it is larger than the sum of its proper divisors (264413009).

1000321231 is a wasteful number, since it uses less digits than its factorization.

1000321231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14543 (or 14536 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 13.

The square root of 1000321231 is about 31627.8553019328. The cubic root of 1000321231 is about 1000.1070655366.

Adding to 1000321231 its reverse (1321230001), we get a palindrome (2321551232).

The spelling of 1000321231 in words is "one billion, three hundred twenty-one thousand, two hundred thirty-one".