203235420115231 has 4 divisors (see below), whose sum is σ = 232269051560272. Its totient is φ = 174201788670192.

The previous prime is 203235420115219. The next prime is 203235420115241. The reversal of 203235420115231 is 132511024532302.

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 203235420115231 - 2⁵ = 203235420115199 is a prime.

It is a super-2 number, since 2×203235420115231² (a number of 29 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 (203235420115241) 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, 14516815722510 + ... + 14516815722523.

It is an arithmetic number, because the mean of its divisors is an integer number (58067262890068).

Almost surely, 2^{203235420115231} is an apocalyptic number.

203235420115231 is a deficient number, since it is larger than the sum of its proper divisors (29033631445041).

203235420115231 is an equidigital number, since it uses as much as digits as its factorization.

203235420115231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29033631445040.

The product of its (nonzero) digits is 43200, while the sum is 34.

Adding to 203235420115231 its reverse (132511024532302), we get a palindrome (335746444647533).

The spelling of 203235420115231 in words is "two hundred three trillion, two hundred thirty-five billion, four hundred twenty million, one hundred fifteen thousand, two hundred thirty-one".