47216431 has 4 divisors (see below), whose sum is σ = 47338200. Its totient is φ = 47094664.

The previous prime is 47216419. The next prime is 47216443. The reversal of 47216431 is 13461274.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13461274 = 2 ⋅6730637.

It is an interprime number because it is at equal distance from previous prime (47216419) and next prime (47216443).

It is a cyclic number.

It is not a de Polignac number, because 47216431 - 2⁷ = 47216303 is a prime.

It is a super-2 number, since 2×47216431² = 4458782712755522, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 47216431.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47216231) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 60301 + ... + 61078.

It is an arithmetic number, because the mean of its divisors is an integer number (11834550).

Almost surely, 2^47216431 is an apocalyptic number.

47216431 is a deficient number, since it is larger than the sum of its proper divisors (121769).

47216431 is a wasteful number, since it uses less digits than its factorization.

47216431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 121768.

The product of its digits is 4032, while the sum is 28.

The square root of 47216431 is about 6871.4213231325. The cubic root of 47216431 is about 361.4357044588.

The spelling of 47216431 in words is "forty-seven million, two hundred sixteen thousand, four hundred thirty-one".