47731293 has 6 divisors (see below), whose sum is σ = 68945214. Its totient is φ = 31820856.

The previous prime is 47731261. The next prime is 47731301. The reversal of 47731293 is 39213774.

47731293 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 38713284 + 9018009 = 6222^2 + 3003^2 .

It is not a de Polignac number, because 47731293 - 2⁵ = 47731261 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47731253) 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 5 ways as a sum of consecutive naturals, for example, 2651730 + ... + 2651747.

It is an arithmetic number, because the mean of its divisors is an integer number (11490869).

Almost surely, 2^47731293 is an apocalyptic number.

It is an amenable number.

47731293 is a deficient number, since it is larger than the sum of its proper divisors (21213921).

47731293 is a wasteful number, since it uses less digits than its factorization.

47731293 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5303483 (or 5303480 counting only the distinct ones).

The product of its digits is 31752, while the sum is 36.

The square root of 47731293 is about 6908.7837569286. The cubic root of 47731293 is about 362.7446921844.

The spelling of 47731293 in words is "forty-seven million, seven hundred thirty-one thousand, two hundred ninety-three".