231201123001 has 4 divisors (see below), whose sum is σ = 231222719104. Its totient is φ = 231179526900.

The previous prime is 231201122987. The next prime is 231201123061. The reversal of 231201123001 is 100321102132.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 231201123001 - 2¹⁵ = 231201090233 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (231201123061) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10781985 + ... + 10803406.

It is an arithmetic number, because the mean of its divisors is an integer number (57805679776).

Almost surely, 2^231201123001 is an apocalyptic number.

It is an amenable number.

231201123001 is a deficient number, since it is larger than the sum of its proper divisors (21596103).

231201123001 is a wasteful number, since it uses less digits than its factorization.

231201123001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21596102.

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 231201123001 its reverse (100321102132), we get a palindrome (331522225133).

The spelling of 231201123001 in words is "two hundred thirty-one billion, two hundred one million, one hundred twenty-three thousand, one".