47234431 has 4 divisors (see below), whose sum is σ = 47881552. Its totient is φ = 46587312.

The previous prime is 47234423. The next prime is 47234471. The reversal of 47234431 is 13443274.

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 47234431 - 2³ = 47234423 is a prime.

It is a super-2 number, since 2×47234431² = 4462182943787522, 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 47234431.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47234471) 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, 323451 + ... + 323596.

It is an arithmetic number, because the mean of its divisors is an integer number (11970388).

Almost surely, 2^47234431 is an apocalyptic number.

47234431 is a deficient number, since it is larger than the sum of its proper divisors (647121).

47234431 is an equidigital number, since it uses as much as digits as its factorization.

47234431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 647120.

The product of its digits is 8064, while the sum is 28.

The square root of 47234431 is about 6872.7309710187. The cubic root of 47234431 is about 361.4816278516.

The spelling of 47234431 in words is "forty-seven million, two hundred thirty-four thousand, four hundred thirty-one".