1001012231 has 8 divisors (see below), whose sum is σ = 1018483200. Its totient is φ = 983558200.

The previous prime is 1001012203. The next prime is 1001012237. The reversal of 1001012231 is 1322101001.

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

It is a cyclic number.

It is not a de Polignac number, because 1001012231 - 2⁶ = 1001012167 is a prime.

It is a super-2 number, since 2×1001012231² = 2004050973223194722, 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 (1001012237) 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, 195656 + ... + 200706.

It is an arithmetic number, because the mean of its divisors is an integer number (127310400).

Almost surely, 2^1001012231 is an apocalyptic number.

1001012231 is a deficient number, since it is larger than the sum of its proper divisors (17470969).

1001012231 is an equidigital number, since it uses as much as digits as its factorization.

1001012231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8469.

The product of its (nonzero) digits is 12, while the sum is 11.

The square root of 1001012231 is about 31638.7773309905. Note that the first 3 decimals coincide. The cubic root of 1001012231 is about 1000.3372965516.

Adding to 1001012231 its reverse (1322101001), we get a palindrome (2323113232).

The spelling of 1001012231 in words is "one billion, one million, twelve thousand, two hundred thirty-one".