40342644431 has 8 divisors (see below), whose sum is σ = 40952077824. Its totient is φ = 39736148760.

The previous prime is 40342644421. The next prime is 40342644443. The reversal of 40342644431 is 13444624304.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40342644431 is a prime.

It is a super-2 number, since 2×40342644431² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 40342644391 and 40342644400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40342644421) 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, 706751 + ... + 761696.

It is an arithmetic number, because the mean of its divisors is an integer number (5119009728).

Almost surely, 2^40342644431 is an apocalyptic number.

40342644431 is a deficient number, since it is larger than the sum of its proper divisors (609433393).

40342644431 is a wasteful number, since it uses less digits than its factorization.

40342644431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1468861.

The product of its (nonzero) digits is 110592, while the sum is 35.

The spelling of 40342644431 in words is "forty billion, three hundred forty-two million, six hundred forty-four thousand, four hundred thirty-one".