43131323 has 8 divisors (see below), whose sum is σ = 46058880. Its totient is φ = 40299840.

The previous prime is 43131313. The next prime is 43131367. The reversal of 43131323 is 32313134.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 43131323 - 2⁶ = 43131259 is a prime.

It is a super-2 number, since 2×43131323² = 3720622047460658, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 43131295 and 43131304.

It is not an unprimeable number, because it can be changed into a prime (43131313) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23090 + ... + 24887.

It is an arithmetic number, because the mean of its divisors is an integer number (5757360).

Almost surely, 2^43131323 is an apocalyptic number.

43131323 is a deficient number, since it is larger than the sum of its proper divisors (2927557).

43131323 is a wasteful number, since it uses less digits than its factorization.

43131323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48037.

The product of its digits is 648, while the sum is 20.

The square root of 43131323 is about 6567.4441756288. Note that the first 3 decimals coincide. The cubic root of 43131323 is about 350.6960922207.

Adding to 43131323 its reverse (32313134), we get a palindrome (75444457).

The spelling of 43131323 in words is "forty-three million, one hundred thirty-one thousand, three hundred twenty-three".