30771029 has 2 divisors, whose sum is σ = 30771030. Its totient is φ = 30771028.

The previous prime is 30771017. The next prime is 30771031. The reversal of 30771029 is 92017703.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 24900100 + 5870929 = 4990^2 + 2423^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-30771029 is a prime.

Together with 30771031, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 30770992 and 30771010.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30471029) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15385514 + 15385515.

It is an arithmetic number, because the mean of its divisors is an integer number (15385515).

Almost surely, 2^30771029 is an apocalyptic number.

It is an amenable number.

30771029 is a deficient number, since it is larger than the sum of its proper divisors (1).

30771029 is an equidigital number, since it uses as much as digits as its factorization.

30771029 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2646, while the sum is 29.

The square root of 30771029 is about 5547.1640502152. The cubic root of 30771029 is about 313.3627283674.

The spelling of 30771029 in words is "thirty million, seven hundred seventy-one thousand, twenty-nine".