231131303 has 16 divisors (see below), whose sum is σ = 264761280. Its totient is φ = 199881216.

The previous prime is 231131273. The next prime is 231131317. The reversal of 231131303 is 303131132.

It is a cyclic number.

It is not a de Polignac number, because 231131303 - 2¹⁰ = 231130279 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231131323) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 48326 + ... + 52892.

It is an arithmetic number, because the mean of its divisors is an integer number (16547580).

Almost surely, 2^231131303 is an apocalyptic number.

231131303 is a deficient number, since it is larger than the sum of its proper divisors (33629977).

231131303 is a wasteful number, since it uses less digits than its factorization.

231131303 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4826.

The product of its (nonzero) digits is 162, while the sum is 17.

The square root of 231131303 is about 15203.0030914948. The cubic root of 231131303 is about 613.6954770624.

Adding to 231131303 its reverse (303131132), we get a palindrome (534262435).

The spelling of 231131303 in words is "two hundred thirty-one million, one hundred thirty-one thousand, three hundred three".