8131323 has 4 divisors (see below), whose sum is σ = 10841768. Its totient is φ = 5420880.

The previous prime is 8131309. The next prime is 8131327. The reversal of 8131323 is 3231318.

It is a happy number.

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

It is not a de Polignac number, because 8131323 - 2¹⁰ = 8130299 is a prime.

It is a super-2 number, since 2×8131323² = 132236827460658, which contains 22 as substring.

It is a Duffinian number.

It is a nialpdrome in base 15.

It is a self number, because there is not a number n which added to its sum of digits gives 8131323.

It is not an unprimeable number, because it can be changed into a prime (8131327) 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, 1355218 + ... + 1355223.

It is an arithmetic number, because the mean of its divisors is an integer number (2710442).

Almost surely, 2^8131323 is an apocalyptic number.

8131323 is a deficient number, since it is larger than the sum of its proper divisors (2710445).

8131323 is a wasteful number, since it uses less digits than its factorization.

8131323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2710444.

The product of its digits is 432, while the sum is 21.

The square root of 8131323 is about 2851.5474746179. The cubic root of 8131323 is about 201.0884242514.

The spelling of 8131323 in words is "eight million, one hundred thirty-one thousand, three hundred twenty-three".