47431243 has 4 divisors (see below), whose sum is σ = 48139240. Its totient is φ = 46723248.

The previous prime is 47431217. The next prime is 47431247. The reversal of 47431243 is 34213474.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 34213474 = 2 ⋅17106737.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-47431243 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (47431247) 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, 353898 + ... + 354031.

It is an arithmetic number, because the mean of its divisors is an integer number (12034810).

Almost surely, 2^47431243 is an apocalyptic number.

47431243 is a deficient number, since it is larger than the sum of its proper divisors (707997).

47431243 is an equidigital number, since it uses as much as digits as its factorization.

47431243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 707996.

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

The square root of 47431243 is about 6887.0344125756. The cubic root of 47431243 is about 361.9829947345.

It can be divided in two parts, 47431 and 243, that added together give a palindrome (47674).

The spelling of 47431243 in words is "forty-seven million, four hundred thirty-one thousand, two hundred forty-three".