31201120203 has 16 divisors (see below), whose sum is σ = 46610029056. Its totient is φ = 18398694240.

The previous prime is 31201120183. The next prime is 31201120217. The reversal of 31201120203 is 30202110213.

It is not a de Polignac number, because 31201120203 - 2⁸ = 31201119947 is a prime.

It is a super-2 number, since 2×31201120203² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (31201120003) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12775651 + ... + 12778092.

It is an arithmetic number, because the mean of its divisors is an integer number (2913126816).

Almost surely, 2^31201120203 is an apocalyptic number.

31201120203 is a gapful number since it is divisible by the number (33) formed by its first and last digit.

31201120203 is a deficient number, since it is larger than the sum of its proper divisors (15408908853).

31201120203 is a wasteful number, since it uses less digits than its factorization.

31201120203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25553794.

The product of its (nonzero) digits is 72, while the sum is 15.

Adding to 31201120203 its reverse (30202110213), we get a palindrome (61403230416).

The spelling of 31201120203 in words is "thirty-one billion, two hundred one million, one hundred twenty thousand, two hundred three".