30957109 has 2 divisors, whose sum is σ = 30957110. Its totient is φ = 30957108.

The previous prime is 30957077. The next prime is 30957131. The reversal of 30957109 is 90175903.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 25908100 + 5049009 = 5090^2 + 2247^2 .

It is a cyclic number.

It is not a de Polignac number, because 30957109 - 2⁵ = 30957077 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30952109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15478554 + 15478555.

It is an arithmetic number, because the mean of its divisors is an integer number (15478555).

Almost surely, 2^30957109 is an apocalyptic number.

It is an amenable number.

30957109 is a deficient number, since it is larger than the sum of its proper divisors (1).

30957109 is an equidigital number, since it uses as much as digits as its factorization.

30957109 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8505, while the sum is 34.

The square root of 30957109 is about 5563.9113041097. The cubic root of 30957109 is about 313.9931199217.

The spelling of 30957109 in words is "thirty million, nine hundred fifty-seven thousand, one hundred nine".