231031330 has 32 divisors (see below), whose sum is σ = 432298944. Its totient is φ = 88819776.

The previous prime is 231031321. The next prime is 231031363. The reversal of 231031330 is 33130132.

It is a nialpdrome in base 16.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26949 + ... + 34471.

It is an arithmetic number, because the mean of its divisors is an integer number (13509342).

Almost surely, 2^231031330 is an apocalyptic number.

231031330 is a deficient number, since it is larger than the sum of its proper divisors (201267614).

231031330 is a wasteful number, since it uses less digits than its factorization.

231031330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7650.

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

The square root of 231031330 is about 15199.7147999560. The cubic root of 231031330 is about 613.6069821606.

Adding to 231031330 its reverse (33130132), we get a palindrome (264161462).

It can be divided in two parts, 231031 and 330, that added together give a square (231361 = 481²).

The spelling of 231031330 in words is "two hundred thirty-one million, thirty-one thousand, three hundred thirty".