30742693 has 2 divisors, whose sum is σ = 30742694. Its totient is φ = 30742692.

The previous prime is 30742643. The next prime is 30742711. The reversal of 30742693 is 39624703.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 30283009 + 459684 = 5503^2 + 678^2 .

It is an emirp because it is prime and its reverse (39624703) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 30742693 - 2⁹ = 30742181 is a prime.

It is a super-2 number, since 2×30742693² = 1890226345784498, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30742603) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15371346 + 15371347.

It is an arithmetic number, because the mean of its divisors is an integer number (15371347).

Almost surely, 2^30742693 is an apocalyptic number.

It is an amenable number.

30742693 is a deficient number, since it is larger than the sum of its proper divisors (1).

30742693 is an equidigital number, since it uses as much as digits as its factorization.

30742693 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 27216, while the sum is 34.

The square root of 30742693 is about 5544.6093640580. The cubic root of 30742693 is about 313.2665104470.

The spelling of 30742693 in words is "thirty million, seven hundred forty-two thousand, six hundred ninety-three".