40001465431 has 4 divisors (see below), whose sum is σ = 40131763672. Its totient is φ = 39871167192.

The previous prime is 40001465429. The next prime is 40001465467. The reversal of 40001465431 is 13456410004.

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 40001465431 - 2¹ = 40001465429 is a prime.

It is a super-2 number, since 2×40001465431² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 40001465431.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40001435431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 65148660 + ... + 65149273.

It is an arithmetic number, because the mean of its divisors is an integer number (10032940918).

Almost surely, 2^40001465431 is an apocalyptic number.

40001465431 is a deficient number, since it is larger than the sum of its proper divisors (130298241).

40001465431 is a wasteful number, since it uses less digits than its factorization.

40001465431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 130298240.

The product of its (nonzero) digits is 5760, while the sum is 28.

Adding to 40001465431 its reverse (13456410004), we get a palindrome (53457875435).

The spelling of 40001465431 in words is "forty billion, one million, four hundred sixty-five thousand, four hundred thirty-one".