47313031 has 2 divisors, whose sum is σ = 47313032. Its totient is φ = 47313030.

The previous prime is 47313017. The next prime is 47313053. The reversal of 47313031 is 13031374.

It is a happy number.

47313031 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an a-pointer prime, because the next prime (47313053) can be obtained adding 47313031 to its sum of digits (22).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 47313031 - 2⁵ = 47312999 is a prime.

It is a super-2 number, since 2×47313031² = 4477045804813922, which contains 22 as substring.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 47312993 and 47313011.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (47313131) 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, 23656515 + 23656516.

It is an arithmetic number, because the mean of its divisors is an integer number (23656516).

Almost surely, 2^47313031 is an apocalyptic number.

47313031 is a deficient number, since it is larger than the sum of its proper divisors (1).

47313031 is an equidigital number, since it uses as much as digits as its factorization.

47313031 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 756, while the sum is 22.

The square root of 47313031 is about 6878.4468450370. The cubic root of 47313031 is about 361.6820234111.

The spelling of 47313031 in words is "forty-seven million, three hundred thirteen thousand, thirty-one".