231303032331 has 16 divisors (see below), whose sum is σ = 352483065600. Its totient is φ = 132165173088.

The previous prime is 231303032287. The next prime is 231303032377. The reversal of 231303032331 is 133230303132.

It is not a de Polignac number, because 231303032331 - 2⁶ = 231303032267 is a prime.

It is a super-2 number, since 2×231303032331² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (231303033331) 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, 32205 + ... + 680913.

It is an arithmetic number, because the mean of its divisors is an integer number (22030191600).

Almost surely, 2^231303032331 is an apocalyptic number.

231303032331 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

231303032331 is a deficient number, since it is larger than the sum of its proper divisors (121180033269).

231303032331 is a wasteful number, since it uses less digits than its factorization.

231303032331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 665698.

The product of its (nonzero) digits is 2916, while the sum is 24.

Adding to 231303032331 its reverse (133230303132), we get a palindrome (364533335463).

The spelling of 231303032331 in words is "two hundred thirty-one billion, three hundred three million, thirty-two thousand, three hundred thirty-one".