9923131 has 4 divisors (see below), whose sum is σ = 10243264. Its totient is φ = 9603000.

The previous prime is 9923129. The next prime is 9923167. The reversal of 9923131 is 1313299.

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

It is a cyclic number.

It is not a de Polignac number, because 9923131 - 2¹ = 9923129 is a prime.

It is a super-3 number, since 3×9923131³ (a number of 22 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

9923131 is a modest number, since divided by 3131 gives 992 as remainder.

9923131 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 9923131.

It is not an unprimeable number, because it can be changed into a prime (9923101) 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, 160020 + ... + 160081.

It is an arithmetic number, because the mean of its divisors is an integer number (2560816).

Almost surely, 2^9923131 is an apocalyptic number.

9923131 is a deficient number, since it is larger than the sum of its proper divisors (320133).

9923131 is a wasteful number, since it uses less digits than its factorization.

9923131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 320132.

The product of its digits is 1458, while the sum is 28.

The square root of 9923131 is about 3150.1001571379. The cubic root of 9923131 is about 214.8900176624.

The spelling of 9923131 in words is "nine million, nine hundred twenty-three thousand, one hundred thirty-one".