2331221293 has 4 divisors (see below), whose sum is σ = 2331783580. Its totient is φ = 2330659008.

The previous prime is 2331221267. The next prime is 2331221309. The reversal of 2331221293 is 3921221332.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2277007524 + 54213769 = 47718^2 + 7363^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2331221293 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2331221213) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 274878 + ... + 283231.

It is an arithmetic number, because the mean of its divisors is an integer number (582945895).

Almost surely, 2^2331221293 is an apocalyptic number.

It is an amenable number.

2331221293 is a deficient number, since it is larger than the sum of its proper divisors (562287).

2331221293 is an equidigital number, since it uses as much as digits as its factorization.

2331221293 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 562286.

The product of its digits is 3888, while the sum is 28.

The square root of 2331221293 is about 48282.7225102313. The cubic root of 2331221293 is about 1325.9520947168.

The spelling of 2331221293 in words is "two billion, three hundred thirty-one million, two hundred twenty-one thousand, two hundred ninety-three".