47731357 has 4 divisors (see below), whose sum is σ = 47829856. Its totient is φ = 47632860.

The previous prime is 47731337. The next prime is 47731379. The reversal of 47731357 is 75313774.

47731357 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, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 47731357 - 2¹⁵ = 47698589 is a prime.

It is a super-2 number, since 2×47731357² = 4556564882122898, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47731337) 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, 48519 + ... + 49492.

It is an arithmetic number, because the mean of its divisors is an integer number (11957464).

Almost surely, 2^47731357 is an apocalyptic number.

It is an amenable number.

47731357 is a deficient number, since it is larger than the sum of its proper divisors (98499).

47731357 is an equidigital number, since it uses as much as digits as its factorization.

47731357 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98498.

The product of its digits is 61740, while the sum is 37.

The square root of 47731357 is about 6908.7883887119. The cubic root of 47731357 is about 362.7448543118.

The spelling of 47731357 in words is "forty-seven million, seven hundred thirty-one thousand, three hundred fifty-seven".