20331232001 has 8 divisors (see below), whose sum is σ = 20690640360. Its totient is φ = 19974734208.

The previous prime is 20331231997. The next prime is 20331232057. The reversal of 20331232001 is 10023213302.

It can be written as a sum of positive squares in 4 ways, for example, as 1281711601 + 19049520400 = 35801^2 + 138020^2 .

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 20331232001 - 2² = 20331231997 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20331237001) 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, 713546 + ... + 741491.

It is an arithmetic number, because the mean of its divisors is an integer number (2586330045).

Almost surely, 2^20331232001 is an apocalyptic number.

It is an amenable number.

20331232001 is a deficient number, since it is larger than the sum of its proper divisors (359408359).

20331232001 is a wasteful number, since it uses less digits than its factorization.

20331232001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1455283.

The product of its (nonzero) digits is 216, while the sum is 17.

Adding to 20331232001 its reverse (10023213302), we get a palindrome (30354445303).

The spelling of 20331232001 in words is "twenty billion, three hundred thirty-one million, two hundred thirty-two thousand, one".