43223131 has 8 divisors (see below), whose sum is σ = 49611744. Its totient is φ = 36888000.

The previous prime is 43223113. The next prime is 43223149. The reversal of 43223131 is 13132234.

It is an interprime number because it is at equal distance from previous prime (43223113) and next prime (43223149).

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 43223131 - 2⁵ = 43223099 is a prime.

It is a super-2 number, since 2×43223131² = 3736478106886322, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 43223099 and 43223108.

It is not an unprimeable number, because it can be changed into a prime (43223101) 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, 11620 + ... + 14881.

It is an arithmetic number, because the mean of its divisors is an integer number (6201468).

Almost surely, 2^43223131 is an apocalyptic number.

43223131 is a deficient number, since it is larger than the sum of its proper divisors (6388613).

43223131 is a wasteful number, since it uses less digits than its factorization.

43223131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26741.

The product of its digits is 432, while the sum is 19.

The square root of 43223131 is about 6574.4300893690. The cubic root of 43223131 is about 350.9447428321.

Adding to 43223131 its reverse (13132234), we get a palindrome (56355365).

The spelling of 43223131 in words is "forty-three million, two hundred twenty-three thousand, one hundred thirty-one".