203131323 has 6 divisors (see below), whose sum is σ = 293411924. Its totient is φ = 135420876.

The previous prime is 203131319. The next prime is 203131349. The reversal of 203131323 is 323131302.

It is not a de Polignac number, because 203131323 - 2² = 203131319 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 203131296 and 203131305.

It is not an unprimeable number, because it can be changed into a prime (203131373) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 11285065 + ... + 11285082.

Almost surely, 2^203131323 is an apocalyptic number.

203131323 is a deficient number, since it is larger than the sum of its proper divisors (90280601).

203131323 is a wasteful number, since it uses less digits than its factorization.

203131323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22570153 (or 22570150 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 18.

The square root of 203131323 is about 14252.4146375272. The cubic root of 203131323 is about 587.8397713497.

Adding to 203131323 its reverse (323131302), we get a palindrome (526262625).

The spelling of 203131323 in words is "two hundred three million, one hundred thirty-one thousand, three hundred twenty-three".