43973069731 has 8 divisors (see below), whose sum is σ = 45948075264. Its totient is φ = 42003325320.

The previous prime is 43973069719. The next prime is 43973069761. The reversal of 43973069731 is 13796037934.

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 43973069731 - 2⁷ = 43973069603 is a prime.

It is a super-2 number, since 2×43973069731² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (43973069711) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1298185 + ... + 1331626.

It is an arithmetic number, because the mean of its divisors is an integer number (5743509408).

Almost surely, 2^43973069731 is an apocalyptic number.

43973069731 is a deficient number, since it is larger than the sum of its proper divisors (1975005533).

43973069731 is a wasteful number, since it uses less digits than its factorization.

43973069731 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2630561.

The product of its (nonzero) digits is 2571912, while the sum is 52.

The spelling of 43973069731 in words is "forty-three billion, nine hundred seventy-three million, sixty-nine thousand, seven hundred thirty-one".