1001233231 has 2 divisors, whose sum is σ = 1001233232. Its totient is φ = 1001233230.

The previous prime is 1001233201. The next prime is 1001233237. The reversal of 1001233231 is 1323321001.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1001233231 - 2⁹ = 1001232719 is a prime.

It is a super-2 number, since 2×1001233231² = 2004935965717398722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1001233237) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 500616615 + 500616616.

It is an arithmetic number, because the mean of its divisors is an integer number (500616616).

Almost surely, 2^1001233231 is an apocalyptic number.

1001233231 is a deficient number, since it is larger than the sum of its proper divisors (1).

1001233231 is an equidigital number, since it uses as much as digits as its factorization.

1001233231 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 108, while the sum is 16.

The square root of 1001233231 is about 31642.2696878716. The cubic root of 1001233231 is about 1000.4109081314.

Adding to 1001233231 its reverse (1323321001), we get a palindrome (2324554232).

The spelling of 1001233231 in words is "one billion, one million, two hundred thirty-three thousand, two hundred thirty-one".