3121230312330 has 64 divisors (see below), whose sum is σ = 8067562892928. Its totient is φ = 768266369280.

The previous prime is 3121230312203. The next prime is 3121230312331. The reversal of 3121230312330 is 332130321213.

It is a self number, because there is not a number n which added to its sum of digits gives 3121230312330.

It is not an unprimeable number, because it can be changed into a prime (3121230312331) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8549797 + ... + 8907383.

It is an arithmetic number, because the mean of its divisors is an integer number (126055670202).

Almost surely, 2^{3121230312330} is an apocalyptic number.

3121230312330 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

3121230312330 is an abundant number, since it is smaller than the sum of its proper divisors (4946332580598).

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

3121230312330 is a wasteful number, since it uses less digits than its factorization.

3121230312330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 379991.

The product of its (nonzero) digits is 1944, while the sum is 24.

Adding to 3121230312330 its reverse (332130321213), we get a palindrome (3453360633543).

The spelling of 3121230312330 in words is "three trillion, one hundred twenty-one billion, two hundred thirty million, three hundred twelve thousand, three hundred thirty".