40531117943 has 4 divisors (see below), whose sum is σ = 40645937328. Its totient is φ = 40416298560.

The previous prime is 40531117933. The next prime is 40531117967. The reversal of 40531117943 is 34971113504.

It is a happy number.

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-40531117943 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 40531117897 and 40531117906.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40531117933) 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, 57409163 + ... + 57409868.

It is an arithmetic number, because the mean of its divisors is an integer number (10161484332).

Almost surely, 2^40531117943 is an apocalyptic number.

40531117943 is a deficient number, since it is larger than the sum of its proper divisors (114819385).

40531117943 is a wasteful number, since it uses less digits than its factorization.

40531117943 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 114819384.

The product of its (nonzero) digits is 45360, while the sum is 38.

The spelling of 40531117943 in words is "forty billion, five hundred thirty-one million, one hundred seventeen thousand, nine hundred forty-three".