43131 has 8 divisors (see below), whose sum is σ = 62784. Its totient is φ = 26120.

The previous prime is 43117. The next prime is 43133. The reversal of 43131 is 13134.

43131 = T₈₃ + T₈₄ + ... + T₉₃.

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 43131 - 2⁶ = 43067 is a prime.

It is a super-2 number, since 2×43131² = 3720566322, which contains 22 as substring.

It is a nialpdrome in base 15.

It is not an unprimeable number, because it can be changed into a prime (43133) 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, 621 + ... + 686.

It is an arithmetic number, because the mean of its divisors is an integer number (7848).

2⁴³¹³¹ is an apocalyptic number.

43131 is a deficient number, since it is larger than the sum of its proper divisors (19653).

43131 is a wasteful number, since it uses less digits than its factorization.

43131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1321.

The product of its digits is 36, while the sum is 12.

The square root of 43131 is about 207.6800423729. The cubic root of 43131 is about 35.0695216793.

Adding to 43131 its reverse (13134), we get a palindrome (56265).

The spelling of 43131 in words is "forty-three thousand, one hundred thirty-one".