47231217 has 24 divisors (see below), whose sum is σ = 74692800. Its totient is φ = 28522080.

The previous prime is 47231183. The next prime is 47231231. The reversal of 47231217 is 71213274.

It is a happy number.

It is not a de Polignac number, because 47231217 - 2⁸ = 47230961 is a prime.

It is not an unprimeable number, because it can be changed into a prime (47231267) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 33868 + ... + 35234.

It is an arithmetic number, because the mean of its divisors is an integer number (3112200).

Almost surely, 2^47231217 is an apocalyptic number.

It is an amenable number.

47231217 is a deficient number, since it is larger than the sum of its proper divisors (27461583).

47231217 is a wasteful number, since it uses less digits than its factorization.

47231217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1733 (or 1730 counting only the distinct ones).

The product of its digits is 2352, while the sum is 27.

The square root of 47231217 is about 6872.4971444156. The cubic root of 47231217 is about 361.4734288304.

The spelling of 47231217 in words is "forty-seven million, two hundred thirty-one thousand, two hundred seventeen".