40127431 has 4 divisors (see below), whose sum is σ = 40150792. Its totient is φ = 40104072.

The previous prime is 40127407. The next prime is 40127453. The reversal of 40127431 is 13472104.

40127431 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 a de Polignac number, because none of the positive numbers 2^k-40127431 is a prime.

It is a super-2 number, since 2×40127431² = 3220421437319522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40127491) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8880 + ... + 12613.

It is an arithmetic number, because the mean of its divisors is an integer number (10037698).

Almost surely, 2^40127431 is an apocalyptic number.

40127431 is a deficient number, since it is larger than the sum of its proper divisors (23361).

40127431 is a wasteful number, since it uses less digits than its factorization.

40127431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23360.

The product of its (nonzero) digits is 672, while the sum is 22.

The square root of 40127431 is about 6334.6216145876. The cubic root of 40127431 is about 342.3579775952.

Adding to 40127431 its reverse (13472104), we get a palindrome (53599535).

The spelling of 40127431 in words is "forty million, one hundred twenty-seven thousand, four hundred thirty-one".