9522131321 has 4 divisors (see below), whose sum is σ = 9664252752. Its totient is φ = 9380009892.

The previous prime is 9522131317. The next prime is 9522131323. The reversal of 9522131321 is 1231312259.

It is a happy number.

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 9522131321 - 2² = 9522131317 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9522131323) 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, 71060615 + ... + 71060748.

It is an arithmetic number, because the mean of its divisors is an integer number (2416063188).

Almost surely, 2^9522131321 is an apocalyptic number.

It is an amenable number.

9522131321 is a deficient number, since it is larger than the sum of its proper divisors (142121431).

9522131321 is a wasteful number, since it uses less digits than its factorization.

9522131321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142121430.

The product of its digits is 3240, while the sum is 29.

The square root of 9522131321 is about 97581.4086852614. The cubic root of 9522131321 is about 2119.5551547500. Note that the first 3 decimals are identical.

The spelling of 9522131321 in words is "nine billion, five hundred twenty-two million, one hundred thirty-one thousand, three hundred twenty-one".