31000200203 has 6 divisors (see below), whose sum is σ = 36061457436. Its totient is φ = 26571600132.

The previous prime is 31000200191. The next prime is 31000200233. The reversal of 31000200203 is 30200200013.

It is not a de Polignac number, because 31000200203 - 2²² = 30996005899 is a prime.

It is a super-2 number, since 2×31000200203² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31000200233) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 316328525 + ... + 316328622.

It is an arithmetic number, because the mean of its divisors is an integer number (6010242906).

Almost surely, 2^31000200203 is an apocalyptic number.

31000200203 is a deficient number, since it is larger than the sum of its proper divisors (5061257233).

31000200203 is an equidigital number, since it uses as much as digits as its factorization.

31000200203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 632657161 (or 632657154 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 11.

Adding to 31000200203 its reverse (30200200013), we get a palindrome (61200400216).

The spelling of 31000200203 in words is "thirty-one billion, two hundred thousand, two hundred three".