43022731987 has 4 divisors (see below), whose sum is σ = 43506133560. Its totient is φ = 42539330416.

The previous prime is 43022731957. The next prime is 43022732003. The reversal of 43022731987 is 78913722034.

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 43022731987 - 2⁷ = 43022731859 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (43022731957) 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, 241700653 + ... + 241700830.

It is an arithmetic number, because the mean of its divisors is an integer number (10876533390).

Almost surely, 2^43022731987 is an apocalyptic number.

43022731987 is a deficient number, since it is larger than the sum of its proper divisors (483401573).

43022731987 is an equidigital number, since it uses as much as digits as its factorization.

43022731987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 483401572.

The product of its (nonzero) digits is 508032, while the sum is 46.

The spelling of 43022731987 in words is "forty-three billion, twenty-two million, seven hundred thirty-one thousand, nine hundred eighty-seven".