203133113211 has 24 divisors (see below), whose sum is σ = 315159005520. Its totient is φ = 116040916992.

The previous prime is 203133113207. The next prime is 203133113273. The reversal of 203133113211 is 112311331302.

It is a happy number.

It is not a de Polignac number, because 203133113211 - 2² = 203133113207 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (203133113111) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 281815 + ... + 696911.

It is an arithmetic number, because the mean of its divisors is an integer number (13131625230).

Almost surely, 2^203133113211 is an apocalyptic number.

203133113211 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

203133113211 is a deficient number, since it is larger than the sum of its proper divisors (112025892309).

203133113211 is a wasteful number, since it uses less digits than its factorization.

203133113211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 418443 (or 418436 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 21.

Adding to 203133113211 its reverse (112311331302), we get a palindrome (315444444513).

The spelling of 203133113211 in words is "two hundred three billion, one hundred thirty-three million, one hundred thirteen thousand, two hundred eleven".