30980357 has 2 divisors, whose sum is σ = 30980358. Its totient is φ = 30980356.

The previous prime is 30980351. The next prime is 30980363. The reversal of 30980357 is 75308903.

It is a Cunningham number, because it is equal to 5566²+1.

It is a balanced prime because it is at equal distance from previous prime (30980351) and next prime (30980363).

It can be written as a sum of positive squares in only one way, i.e., 30980356 + 1 = 5566^2 + 1^2 .

It is an emirp because it is prime and its reverse (75308903) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 30980357 - 2⁸ = 30980101 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30980351) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15490178 + 15490179.

It is an arithmetic number, because the mean of its divisors is an integer number (15490179).

Almost surely, 2^30980357 is an apocalyptic number.

It is an amenable number.

30980357 is a deficient number, since it is larger than the sum of its proper divisors (1).

30980357 is an equidigital number, since it uses as much as digits as its factorization.

30980357 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 22680, while the sum is 35.

The square root of 30980357 is about 5566.0000898311. Note that the first 4 decimals coincide. The cubic root of 30980357 is about 314.0717005316.

The spelling of 30980357 in words is "thirty million, nine hundred eighty thousand, three hundred fifty-seven".