231130212330 has 32 divisors (see below), whose sum is σ = 555842305728. Its totient is φ = 61509190400.

The previous prime is 231130212293. The next prime is 231130212343. The reversal of 231130212330 is 33212031132.

It is a junction number, because it is equal to n+sod(n) for n = 231130212297 and 231130212306.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7830831 + ... + 7860290.

It is an arithmetic number, because the mean of its divisors is an integer number (17370072054).

Almost surely, 2^231130212330 is an apocalyptic number.

231130212330 is an abundant number, since it is smaller than the sum of its proper divisors (324712093398).

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

231130212330 is a wasteful number, since it uses less digits than its factorization.

231130212330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15691622.

The product of its (nonzero) digits is 648, while the sum is 21.

Adding to 231130212330 its reverse (33212031132), we get a palindrome (264342243462).

The spelling of 231130212330 in words is "two hundred thirty-one billion, one hundred thirty million, two hundred twelve thousand, three hundred thirty".