47251231 has 4 divisors (see below), whose sum is σ = 47412792. Its totient is φ = 47089672.

The previous prime is 47251201. The next prime is 47251241. The reversal of 47251231 is 13215274.

It is a happy number.

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 47251231 - 2¹¹ = 47249183 is a prime.

It is a super-2 number, since 2×47251231² = 4465357662030722, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 47251196 and 47251205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47251201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 80341 + ... + 80926.

It is an arithmetic number, because the mean of its divisors is an integer number (11853198).

Almost surely, 2^47251231 is an apocalyptic number.

47251231 is a deficient number, since it is larger than the sum of its proper divisors (161561).

47251231 is a wasteful number, since it uses less digits than its factorization.

47251231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 161560.

The product of its digits is 1680, while the sum is 25.

The square root of 47251231 is about 6873.9530839249. The cubic root of 47251231 is about 361.5244791600.

The spelling of 47251231 in words is "forty-seven million, two hundred fifty-one thousand, two hundred thirty-one".