47943731 has 4 divisors (see below), whose sum is σ = 52302264. Its totient is φ = 43585200.

The previous prime is 47943703. The next prime is 47943739. The reversal of 47943731 is 13734974.

It is a happy number.

47943731 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 47943731 - 2¹⁰ = 47942707 is a prime.

It is a super-2 number, since 2×47943731² = 4597202684400722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (47943739) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2179250 + ... + 2179271.

It is an arithmetic number, because the mean of its divisors is an integer number (13075566).

Almost surely, 2^47943731 is an apocalyptic number.

47943731 is a deficient number, since it is larger than the sum of its proper divisors (4358533).

47943731 is a wasteful number, since it uses less digits than its factorization.

47943731 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4358532.

The product of its digits is 63504, while the sum is 38.

The square root of 47943731 is about 6924.1411741818. The cubic root of 47943731 is about 363.2820525406.

The spelling of 47943731 in words is "forty-seven million, nine hundred forty-three thousand, seven hundred thirty-one".