20131231201 has 8 divisors (see below), whose sum is σ = 20423763360. Its totient is φ = 19840173408.

The previous prime is 20131231189. The next prime is 20131231213. The reversal of 20131231201 is 10213213102.

It is an interprime number because it is at equal distance from previous prime (20131231189) and next prime (20131231213).

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 20131231201 - 2⁷ = 20131231073 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20131232201) 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, 341071 + ... + 395716.

It is an arithmetic number, because the mean of its divisors is an integer number (2552970420).

Almost surely, 2^20131231201 is an apocalyptic number.

It is an amenable number.

20131231201 is a deficient number, since it is larger than the sum of its proper divisors (292532159).

20131231201 is an equidigital number, since it uses as much as digits as its factorization.

20131231201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 737183.

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

Adding to 20131231201 its reverse (10213213102), we get a palindrome (30344444303).

The spelling of 20131231201 in words is "twenty billion, one hundred thirty-one million, two hundred thirty-one thousand, two hundred one".