231040001 has 8 divisors (see below), whose sum is σ = 235295208. Its totient is φ = 226800000.

The previous prime is 231039971. The next prime is 231040009. The reversal of 231040001 is 100040132.

It is a happy number.

It is a Cunningham number, because it is equal to 15200²+1.

It can be written as a sum of positive squares in 4 ways, for example, as 1 + 231040000 = 1^2 + 15200^2 .

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 231040001 - 2²⁶ = 163931137 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (231040009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29501 + ... + 36501.

It is an arithmetic number, because the mean of its divisors is an integer number (29411901).

Almost surely, 2^231040001 is an apocalyptic number.

It is an amenable number.

231040001 is a deficient number, since it is larger than the sum of its proper divisors (4255207).

231040001 is an equidigital number, since it uses as much as digits as its factorization.

231040001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7603.

The product of its (nonzero) digits is 24, while the sum is 11.

The square root of 231040001 is about 15200.0000328947. Note that the first 4 decimals coincide. The cubic root of 231040001 is about 613.6146586369.

Adding to 231040001 its reverse (100040132), we get a palindrome (331080133).

The spelling of 231040001 in words is "two hundred thirty-one million, forty thousand, one".