203102311231 has 8 divisors (see below), whose sum is σ = 203213761424. Its totient is φ = 202990898880.

The previous prime is 203102311201. The next prime is 203102311241. The reversal of 203102311231 is 132113201302.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 203102311231 - 2²⁵ = 203068756799 is a prime.

It is a super-2 number, since 2×203102311231² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 203102311199 and 203102311208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (203102311201) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21973771 + ... + 21983011.

It is an arithmetic number, because the mean of its divisors is an integer number (25401720178).

Almost surely, 2^203102311231 is an apocalyptic number.

203102311231 is a deficient number, since it is larger than the sum of its proper divisors (111450193).

203102311231 is an equidigital number, since it uses as much as digits as its factorization.

203102311231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18921.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 203102311231 its reverse (132113201302), we get a palindrome (335215512533).

The spelling of 203102311231 in words is "two hundred three billion, one hundred two million, three hundred eleven thousand, two hundred thirty-one".