43252131 has 32 divisors (see below), whose sum is σ = 66588480. Its totient is φ = 24735744.

The previous prime is 43252129. The next prime is 43252163. The reversal of 43252131 is 13125234.

It is not a de Polignac number, because 43252131 - 2¹ = 43252129 is a prime.

It is a super-2 number, since 2×43252131² = 3741493672082322, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 43252098 and 43252107.

It is not an unprimeable number, because it can be changed into a prime (43252631) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 58641 + ... + 59373.

It is an arithmetic number, because the mean of its divisors is an integer number (2080890).

Almost surely, 2^43252131 is an apocalyptic number.

43252131 is a deficient number, since it is larger than the sum of its proper divisors (23336349).

43252131 is a wasteful number, since it uses less digits than its factorization.

43252131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 855.

The product of its digits is 720, while the sum is 21.

The square root of 43252131 is about 6576.6352339171. The cubic root of 43252131 is about 351.0232125621.

Adding to 43252131 its reverse (13125234), we get a palindrome (56377365).

The spelling of 43252131 in words is "forty-three million, two hundred fifty-two thousand, one hundred thirty-one".