203020131223231 has 32 divisors (see below), whose sum is σ = 244473828139008. Its totient is φ = 164826980857440.

The previous prime is 203020131223211. The next prime is 203020131223249. The reversal of 203020131223231 is 132322131020302.

It is a cyclic number.

It is not a de Polignac number, because 203020131223231 - 2¹⁷ = 203020131092159 is a prime.

It is a super-2 number, since 2×203020131223231² (a number of 29 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 = 203020131223196 and 203020131223205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (203020131223211) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 341495220 + ... + 342089206.

It is an arithmetic number, because the mean of its divisors is an integer number (7639807129344).

Almost surely, 2^{203020131223231} is an apocalyptic number.

203020131223231 is a deficient number, since it is larger than the sum of its proper divisors (41453696915777).

203020131223231 is a wasteful number, since it uses less digits than its factorization.

203020131223231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 614731.

The product of its (nonzero) digits is 2592, while the sum is 25.

Adding to 203020131223231 its reverse (132322131020302), we get a palindrome (335342262243533).

The spelling of 203020131223231 in words is "two hundred three trillion, twenty billion, one hundred thirty-one million, two hundred twenty-three thousand, two hundred thirty-one".