43523240231 has 4 divisors (see below), whose sum is σ = 43529103072. Its totient is φ = 43517377392.

The previous prime is 43523240227. The next prime is 43523240261. The reversal of 43523240231 is 13204232534.

It is a happy number.

43523240231 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13204232534 = 2 ⋅6602116267.

It is a cyclic number.

It is not a de Polignac number, because 43523240231 - 2² = 43523240227 is a prime.

It is a super-2 number, since 2×43523240231² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 43523240194 and 43523240203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43523240261) 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, 2920271 + ... + 2935136.

It is an arithmetic number, because the mean of its divisors is an integer number (10882275768).

Almost surely, 2^43523240231 is an apocalyptic number.

43523240231 is a deficient number, since it is larger than the sum of its proper divisors (5862841).

43523240231 is an equidigital number, since it uses as much as digits as its factorization.

43523240231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5862840.

The product of its (nonzero) digits is 17280, while the sum is 29.

Adding to 43523240231 its reverse (13204232534), we get a palindrome (56727472765).

The spelling of 43523240231 in words is "forty-three billion, five hundred twenty-three million, two hundred forty thousand, two hundred thirty-one".