9923073308281 has 27 divisors (see below), whose sum is σ = 11577770500869. Its totient is φ = 8480070172728.

The previous prime is 9923073308201. The next prime is 9923073308297. The reversal of 9923073308281 is 1828033703299.

The square root of 9923073308281 is 3150091.

It is a perfect power (a square), and thus also a powerful number.

It is not a de Polignac number, because 9923073308281 - 2⁷ = 9923073308153 is a prime.

It is a super-2 number, since 2×9923073308281² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9923073308201) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 13649343940 + ... + 13649344666.

It is an arithmetic number, because the mean of its divisors is an integer number (428806314847).

Almost surely, 2^{9923073308281} is an apocalyptic number.

9923073308281 is the 3150091-st square number.

9923073308281 is the 1575046-th centered octagonal number.

It is an amenable number.

9923073308281 is a deficient number, since it is larger than the sum of its proper divisors (1654697192588).

9923073308281 is an frugal number, since it uses more digits than its factorization.

9923073308281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2706 (or 1353 counting only the distinct ones).

The product of its (nonzero) digits is 3919104, while the sum is 55.

The spelling of 9923073308281 in words is "nine trillion, nine hundred twenty-three billion, seventy-three million, three hundred eight thousand, two hundred eighty-one".