203021120231 has 2 divisors, whose sum is σ = 203021120232. Its totient is φ = 203021120230.

The previous prime is 203021120209. The next prime is 203021120257. The reversal of 203021120231 is 132021120302.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 203021120231 - 2²² = 203016925927 is a prime.

It is a super-2 number, since 2×203021120231² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (203021120531) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101510560115 + 101510560116.

It is an arithmetic number, because the mean of its divisors is an integer number (101510560116).

Almost surely, 2^203021120231 is an apocalyptic number.

203021120231 is a deficient number, since it is larger than the sum of its proper divisors (1).

203021120231 is an equidigital number, since it uses as much as digits as its factorization.

203021120231 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 203021120231 its reverse (132021120302), we get a palindrome (335042240533).

The spelling of 203021120231 in words is "two hundred three billion, twenty-one million, one hundred twenty thousand, two hundred thirty-one".