47123191 has 2 divisors, whose sum is σ = 47123192. Its totient is φ = 47123190.

The previous prime is 47123183. The next prime is 47123203. The reversal of 47123191 is 19132174.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 47123191 - 2³ = 47123183 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (47123161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23561595 + 23561596.

It is an arithmetic number, because the mean of its divisors is an integer number (23561596).

Almost surely, 2^47123191 is an apocalyptic number.

47123191 is a deficient number, since it is larger than the sum of its proper divisors (1).

47123191 is an equidigital number, since it uses as much as digits as its factorization.

47123191 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1512, while the sum is 28.

The square root of 47123191 is about 6864.6333478198. The cubic root of 47123191 is about 361.1976342801.

The spelling of 47123191 in words is "forty-seven million, one hundred twenty-three thousand, one hundred ninety-one".