331230121 has 4 divisors (see below), whose sum is σ = 332800144. Its totient is φ = 329660100.

The previous prime is 331230079. The next prime is 331230131. The reversal of 331230121 is 121032133.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 331230121 - 2¹⁵ = 331197353 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 331230095 and 331230104.

It is not an unprimeable number, because it can be changed into a prime (331230131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 784695 + ... + 785116.

It is an arithmetic number, because the mean of its divisors is an integer number (83200036).

Almost surely, 2^331230121 is an apocalyptic number.

It is an amenable number.

331230121 is a deficient number, since it is larger than the sum of its proper divisors (1570023).

331230121 is a wasteful number, since it uses less digits than its factorization.

331230121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1570022.

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

The square root of 331230121 is about 18199.7285968775. The cubic root of 331230121 is about 691.8999104852.

Adding to 331230121 its reverse (121032133), we get a palindrome (452262254).

It can be divided in two parts, 3312 and 30121, that added together give a palindrome (33433).

The spelling of 331230121 in words is "three hundred thirty-one million, two hundred thirty thousand, one hundred twenty-one".