40143728431 has 8 divisors (see below), whose sum is σ = 41892710400. Its totient is φ = 38395046712.

The previous prime is 40143728377. The next prime is 40143728441. The reversal of 40143728431 is 13482734104.

40143728431 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 40143728431 - 2¹⁵ = 40143695663 is a prime.

It is a super-2 number, since 2×40143728431² (a number of 22 digits) 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 (40143728441) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 223470 + ... + 360868.

It is an arithmetic number, because the mean of its divisors is an integer number (5236588800).

Almost surely, 2^40143728431 is an apocalyptic number.

40143728431 is a deficient number, since it is larger than the sum of its proper divisors (1748981969).

40143728431 is a wasteful number, since it uses less digits than its factorization.

40143728431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 150125.

The product of its (nonzero) digits is 64512, while the sum is 37.

The spelling of 40143728431 in words is "forty billion, one hundred forty-three million, seven hundred twenty-eight thousand, four hundred thirty-one".