231001101 has 12 divisors (see below), whose sum is σ = 342686812. Its totient is φ = 149838336.

The previous prime is 231001097. The next prime is 231001139. The reversal of 231001101 is 101100132.

It can be written as a sum of positive squares in 2 ways, for example, as 218744100 + 12257001 = 14790^2 + 3501^2 .

It is not a de Polignac number, because 231001101 - 2² = 231001097 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231000101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 346516 + ... + 347181.

Almost surely, 2^231001101 is an apocalyptic number.

It is an amenable number.

231001101 is a deficient number, since it is larger than the sum of its proper divisors (111685711).

231001101 is a wasteful number, since it uses less digits than its factorization.

231001101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 693740 (or 693737 counting only the distinct ones).

The product of its (nonzero) digits is 6, while the sum is 9.

The square root of 231001101 is about 15198.7203737683. The cubic root of 231001101 is about 613.5802187854.

Adding to 231001101 its reverse (101100132), we get a palindrome (332101233).

The spelling of 231001101 in words is "two hundred thirty-one million, one thousand, one hundred one".