31201220203 has 8 divisors (see below), whose sum is σ = 31905603072. Its totient is φ = 30498526056.

The previous prime is 31201220191. The next prime is 31201220213. The reversal of 31201220203 is 30202210213.

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 31201220203 - 2¹⁷ = 31201089131 is a prime.

It is a super-2 number, since 2×31201220203² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a zygodrome in base 6.

It is not an unprimeable number, because it can be changed into a prime (31201220213) 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, 384775 + ... + 458752.

It is an arithmetic number, because the mean of its divisors is an integer number (3988200384).

Almost surely, 2^31201220203 is an apocalyptic number.

31201220203 is a deficient number, since it is larger than the sum of its proper divisors (704382869).

31201220203 is an equidigital number, since it uses as much as digits as its factorization.

31201220203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 844361.

The product of its (nonzero) digits is 144, while the sum is 16.

Adding to 31201220203 its reverse (30202210213), we get a palindrome (61403430416).

The spelling of 31201220203 in words is "thirty-one billion, two hundred one million, two hundred twenty thousand, two hundred three".