30813733 has 2 divisors, whose sum is σ = 30813734. Its totient is φ = 30813732.

The previous prime is 30813719. The next prime is 30813743. The reversal of 30813733 is 33731803.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 25583364 + 5230369 = 5058^2 + 2287^2 .

It is a cyclic number.

It is not a de Polignac number, because 30813733 - 2⁹ = 30813221 is a prime.

It is a super-2 number, since 2×30813733² = 1898972282790578, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30813703) 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, 15406866 + 15406867.

It is an arithmetic number, because the mean of its divisors is an integer number (15406867).

Almost surely, 2^30813733 is an apocalyptic number.

It is an amenable number.

30813733 is a deficient number, since it is larger than the sum of its proper divisors (1).

30813733 is an equidigital number, since it uses as much as digits as its factorization.

30813733 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4536, while the sum is 28.

The square root of 30813733 is about 5551.0118897369. The cubic root of 30813733 is about 313.5076228425.

It can be divided in two parts, 308 and 13733, that added together give a palindrome (14041).

The spelling of 30813733 in words is "thirty million, eight hundred thirteen thousand, seven hundred thirty-three".