31201200203 has 4 divisors (see below), whose sum is σ = 31962205128. Its totient is φ = 30440195280.

The previous prime is 31201200169. The next prime is 31201200209. The reversal of 31201200203 is 30200210213.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 31201200203 - 2¹⁸ = 31200938059 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31201200209) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 380502401 + ... + 380502482.

It is an arithmetic number, because the mean of its divisors is an integer number (7990551282).

Almost surely, 2^31201200203 is an apocalyptic number.

31201200203 is a deficient number, since it is larger than the sum of its proper divisors (761004925).

31201200203 is an equidigital number, since it uses as much as digits as its factorization.

31201200203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 761004924.

The product of its (nonzero) digits is 72, while the sum is 14.

Adding to 31201200203 its reverse (30200210213), we get a palindrome (61401410416).

The spelling of 31201200203 in words is "thirty-one billion, two hundred one million, two hundred thousand, two hundred three".