47681231 has 8 divisors (see below), whose sum is σ = 53581920. Its totient is φ = 42099552.

The previous prime is 47681219. The next prime is 47681239. The reversal of 47681231 is 13218674.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 47681231 - 2¹⁴ = 47664847 is a prime.

It is a super-2 number, since 2×47681231² = 4546999579350722, 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 (47681239) 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 7 ways as a sum of consecutive naturals, for example, 79436 + ... + 80033.

It is an arithmetic number, because the mean of its divisors is an integer number (6697740).

Almost surely, 2^47681231 is an apocalyptic number.

47681231 is a deficient number, since it is larger than the sum of its proper divisors (5900689).

47681231 is a wasteful number, since it uses less digits than its factorization.

47681231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 159505.

The product of its digits is 8064, while the sum is 32.

The square root of 47681231 is about 6905.1597374717. The cubic root of 47681231 is about 362.6178286800.

The spelling of 47681231 in words is "forty-seven million, six hundred eighty-one thousand, two hundred thirty-one".