231030331 has 16 divisors (see below), whose sum is σ = 282968064. Its totient is φ = 184292064.

The previous prime is 231030313. The next prime is 231030337. The reversal of 231030331 is 133030132.

It is a cyclic number.

It is not a de Polignac number, because 231030331 - 2⁵ = 231030299 is a prime.

It is a super-2 number, since 2×231030331² = 106750027683939122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (231030337) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13435 + ... + 25348.

It is an arithmetic number, because the mean of its divisors is an integer number (17685504).

Almost surely, 2^231030331 is an apocalyptic number.

231030331 is a deficient number, since it is larger than the sum of its proper divisors (51937733).

231030331 is a wasteful number, since it uses less digits than its factorization.

231030331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38850.

The product of its (nonzero) digits is 162, while the sum is 16.

The square root of 231030331 is about 15199.6819374617. The cubic root of 231030331 is about 613.6060977289.

Adding to 231030331 its reverse (133030132), we get a palindrome (364060463).

It can be divided in two parts, 231030 and 331, that added together give a square (231361 = 481²).

The spelling of 231030331 in words is "two hundred thirty-one million, thirty thousand, three hundred thirty-one".