43126131 has 4 divisors (see below), whose sum is σ = 57501512. Its totient is φ = 28750752.

The previous prime is 43126129. The next prime is 43126133. The reversal of 43126131 is 13162134.

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

It is an interprime number because it is at equal distance from previous prime (43126129) and next prime (43126133).

It is not a de Polignac number, because 43126131 - 2¹ = 43126129 is a prime.

It is a super-2 number, since 2×43126131² = 3719726350058322, 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 = 43126098 and 43126107.

It is not an unprimeable number, because it can be changed into a prime (43126133) 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, 7187686 + ... + 7187691.

It is an arithmetic number, because the mean of its divisors is an integer number (14375378).

Almost surely, 2^43126131 is an apocalyptic number.

43126131 is a deficient number, since it is larger than the sum of its proper divisors (14375381).

43126131 is a wasteful number, since it uses less digits than its factorization.

43126131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14375380.

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

The square root of 43126131 is about 6567.0488805856. The cubic root of 43126131 is about 350.6820197938.

Adding to 43126131 its reverse (13162134), we get a palindrome (56288265).

It can be divided in two parts, 431 and 26131, that added together give a palindrome (26562).

The spelling of 43126131 in words is "forty-three million, one hundred twenty-six thousand, one hundred thirty-one".