47131523 has 2 divisors, whose sum is σ = 47131524. Its totient is φ = 47131522.

The previous prime is 47131519. The next prime is 47131529. The reversal of 47131523 is 32513174.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 47131523 - 2² = 47131519 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 47131492 and 47131501.

It is not a weakly prime, because it can be changed into another prime (47131529) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23565761 + 23565762.

It is an arithmetic number, because the mean of its divisors is an integer number (23565762).

Almost surely, 2^47131523 is an apocalyptic number.

47131523 is a deficient number, since it is larger than the sum of its proper divisors (1).

47131523 is an equidigital number, since it uses as much as digits as its factorization.

47131523 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2520, while the sum is 26.

The square root of 47131523 is about 6865.2401997308. The cubic root of 47131523 is about 361.2189211898.

Adding to 47131523 its reverse (32513174), we get a palindrome (79644697).

The spelling of 47131523 in words is "forty-seven million, one hundred thirty-one thousand, five hundred twenty-three".