43340131 has 4 divisors (see below), whose sum is σ = 43458592. Its totient is φ = 43221672.

The previous prime is 43340113. The next prime is 43340153. The reversal of 43340131 is 13104334.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13104334 = 2 ⋅6552167.

It is a cyclic number.

It is not a de Polignac number, because 43340131 - 2²³ = 34951523 is a prime.

It is a super-2 number, since 2×43340131² = 3756733910194322, 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 = 43340099 and 43340108.

It is not an unprimeable number, because it can be changed into a prime (43340831) 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, 58680 + ... + 59413.

It is an arithmetic number, because the mean of its divisors is an integer number (10864648).

Almost surely, 2^43340131 is an apocalyptic number.

43340131 is a deficient number, since it is larger than the sum of its proper divisors (118461).

43340131 is a wasteful number, since it uses less digits than its factorization.

43340131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 118460.

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

The square root of 43340131 is about 6583.3221856446. The cubic root of 43340131 is about 351.2611131095.

Adding to 43340131 its reverse (13104334), we get a palindrome (56444465).

The spelling of 43340131 in words is "forty-three million, three hundred forty thousand, one hundred thirty-one".