9313023221 has 4 divisors (see below), whose sum is σ = 9313390092. Its totient is φ = 9312656352.

The previous prime is 9313023197. The next prime is 9313023263. The reversal of 9313023221 is 1223203139.

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 2591319025 + 6721704196 = 50905^2 + 81986^2 .

It is a cyclic number.

It is not a de Polignac number, because 9313023221 - 2²² = 9308828917 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 (9313023121) 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, 142280 + ... + 197153.

It is an arithmetic number, because the mean of its divisors is an integer number (2328347523).

Almost surely, 2^9313023221 is an apocalyptic number.

It is an amenable number.

9313023221 is a deficient number, since it is larger than the sum of its proper divisors (366871).

9313023221 is a wasteful number, since it uses less digits than its factorization.

9313023221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 366870.

The product of its (nonzero) digits is 1944, while the sum is 26.

The square root of 9313023221 is about 96504.0062432643. The cubic root of 9313023221 is about 2103.9248761320.

The spelling of 9313023221 in words is "nine billion, three hundred thirteen million, twenty-three thousand, two hundred twenty-one".