2331425221 has 8 divisors (see below), whose sum is σ = 2359166040. Its totient is φ = 2303718912.

The previous prime is 2331425219. The next prime is 2331425227. The reversal of 2331425221 is 1225241332.

It can be written as a sum of positive squares in 4 ways, for example, as 38068900 + 2293356321 = 6170^2 + 47889^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2331425221 - 2¹ = 2331425219 is a prime.

It is a super-2 number, since 2×2331425221² = 10871087122229797682, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2331425227) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 142941 + ... + 158413.

It is an arithmetic number, because the mean of its divisors is an integer number (294895755).

Almost surely, 2^2331425221 is an apocalyptic number.

It is an amenable number.

2331425221 is a deficient number, since it is larger than the sum of its proper divisors (27740819).

2331425221 is a wasteful number, since it uses less digits than its factorization.

2331425221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17255.

The product of its digits is 2880, while the sum is 25.

The square root of 2331425221 is about 48284.8342753706. The cubic root of 2331425221 is about 1325.9907569802.

Adding to 2331425221 its reverse (1225241332), we get a palindrome (3556666553).

The spelling of 2331425221 in words is "two billion, three hundred thirty-one million, four hundred twenty-five thousand, two hundred twenty-one".