203212203311 has 4 divisors (see below), whose sum is σ = 218843911272. Its totient is φ = 187580495352.

The previous prime is 203212203281. The next prime is 203212203431. The reversal of 203212203311 is 113302212302.

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 203212203311 - 2⁶ = 203212203247 is a prime.

It is a super-2 number, since 2×203212203311² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (203212283311) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7815853961 + ... + 7815853986.

It is an arithmetic number, because the mean of its divisors is an integer number (54710977818).

Almost surely, 2^203212203311 is an apocalyptic number.

203212203311 is a deficient number, since it is larger than the sum of its proper divisors (15631707961).

203212203311 is a wasteful number, since it uses less digits than its factorization.

203212203311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15631707960.

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 203212203311 its reverse (113302212302), we get a palindrome (316514415613).

The spelling of 203212203311 in words is "two hundred three billion, two hundred twelve million, two hundred three thousand, three hundred eleven".