47438031 has 8 divisors (see below), whose sum is σ = 63712944. Its totient is φ = 31394240.

The previous prime is 47437991. The next prime is 47438047. The reversal of 47438031 is 13083474.

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 47438031 - 2¹⁵ = 47405263 is a prime.

It is a super-2 number, since 2×47438031² = 4500733570313922, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 47438031.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47431031) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 57300 + ... + 58121.

It is an arithmetic number, because the mean of its divisors is an integer number (7964118).

Almost surely, 2^47438031 is an apocalyptic number.

47438031 is a deficient number, since it is larger than the sum of its proper divisors (16274913).

47438031 is a wasteful number, since it uses less digits than its factorization.

47438031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115561.

The product of its (nonzero) digits is 8064, while the sum is 30.

The square root of 47438031 is about 6887.5272050279. The cubic root of 47438031 is about 362.0002619983. Note that the first 3 decimals are identical.

The spelling of 47438031 in words is "forty-seven million, four hundred thirty-eight thousand, thirty-one".