47470931 has 2 divisors, whose sum is σ = 47470932. Its totient is φ = 47470930.

The previous prime is 47470903. The next prime is 47470967. The reversal of 47470931 is 13907474.

47470931 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-47470931 is a prime.

It is a super-2 number, since 2×47470931² = 4506978580013522, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 47470891 and 47470900.

It is not a weakly prime, because it can be changed into another prime (47470901) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23735465 + 23735466.

It is an arithmetic number, because the mean of its divisors is an integer number (23735466).

Almost surely, 2^47470931 is an apocalyptic number.

47470931 is a deficient number, since it is larger than the sum of its proper divisors (1).

47470931 is an equidigital number, since it uses as much as digits as its factorization.

47470931 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 21168, while the sum is 35.

The square root of 47470931 is about 6889.9151663863. The cubic root of 47470931 is about 362.0839294422.

The spelling of 47470931 in words is "forty-seven million, four hundred seventy thousand, nine hundred thirty-one".