231121330 has 64 divisors (see below), whose sum is σ = 466373376. Its totient is φ = 81760000.

The previous prime is 231121327. The next prime is 231121367. The reversal of 231121330 is 33121132.

231121330 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 788664 + ... + 788956.

It is an arithmetic number, because the mean of its divisors is an integer number (7287084).

Almost surely, 2^231121330 is an apocalyptic number.

231121330 is an abundant number, since it is smaller than the sum of its proper divisors (235252046).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

231121330 is a wasteful number, since it uses less digits than its factorization.

231121330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 483.

The product of its (nonzero) digits is 108, while the sum is 16.

The square root of 231121330 is about 15202.6750935485. The cubic root of 231121330 is about 613.6866502282.

Adding to 231121330 its reverse (33121132), we get a palindrome (264242462).

It can be divided in two parts, 23112 and 1330, that added together give a palindrome (24442).

The spelling of 231121330 in words is "two hundred thirty-one million, one hundred twenty-one thousand, three hundred thirty".