4040540431 has 4 divisors (see below), whose sum is σ = 4041099664. Its totient is φ = 4039981200.

The previous prime is 4040540423. The next prime is 4040540443. The reversal of 4040540431 is 1340450404.

4040540431 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.

It is a cyclic number.

It is not a de Polignac number, because 4040540431 - 2³ = 4040540423 is a prime.

It is a super-2 number, since 2×4040540431² = 32651933949091331522, 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 = 4040540396 and 4040540405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4040540401) 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, 268635 + ... + 283276.

It is an arithmetic number, because the mean of its divisors is an integer number (1010274916).

Almost surely, 2^4040540431 is an apocalyptic number.

4040540431 is a deficient number, since it is larger than the sum of its proper divisors (559233).

4040540431 is an equidigital number, since it uses as much as digits as its factorization.

4040540431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 559232.

The product of its (nonzero) digits is 3840, while the sum is 25.

The square root of 4040540431 is about 63565.2454647978. The cubic root of 4040540431 is about 1592.7458625892.

Adding to 4040540431 its reverse (1340450404), we get a palindrome (5380990835).

The spelling of 4040540431 in words is "four billion, forty million, five hundred forty thousand, four hundred thirty-one".