47312197 has 2 divisors, whose sum is σ = 47312198. Its totient is φ = 47312196.

The previous prime is 47312191. The next prime is 47312227. The reversal of 47312197 is 79121374.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 46662561 + 649636 = 6831^2 + 806^2 .

It is a cyclic number.

It is not a de Polignac number, because 47312197 - 2³ = 47312189 is a prime.

It is equal to p_2849344 and since 47312197 and 2849344 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (47312191) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23656098 + 23656099.

It is an arithmetic number, because the mean of its divisors is an integer number (23656099).

Almost surely, 2^47312197 is an apocalyptic number.

It is an amenable number.

47312197 is a deficient number, since it is larger than the sum of its proper divisors (1).

47312197 is an equidigital number, since it uses as much as digits as its factorization.

47312197 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10584, while the sum is 34.

The square root of 47312197 is about 6878.3862206189. The cubic root of 47312197 is about 361.6798982420.

The spelling of 47312197 in words is "forty-seven million, three hundred twelve thousand, one hundred ninety-seven".