47931223 has 2 divisors, whose sum is σ = 47931224. Its totient is φ = 47931222.

The previous prime is 47931209. The next prime is 47931253. The reversal of 47931223 is 32213974.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-47931223 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (47931203) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23965611 + 23965612.

It is an arithmetic number, because the mean of its divisors is an integer number (23965612).

Almost surely, 2^47931223 is an apocalyptic number.

47931223 is a deficient number, since it is larger than the sum of its proper divisors (1).

47931223 is an equidigital number, since it uses as much as digits as its factorization.

47931223 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9072, while the sum is 31.

The square root of 47931223 is about 6923.2378985558. The cubic root of 47931223 is about 363.2504576756.

The spelling of 47931223 in words is "forty-seven million, nine hundred thirty-one thousand, two hundred twenty-three".