30913073 has 2 divisors, whose sum is σ = 30913074. Its totient is φ = 30913072.

The previous prime is 30913067. The next prime is 30913111. The reversal of 30913073 is 37031903.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 29899024 + 1014049 = 5468^2 + 1007^2 .

It is a cyclic number.

It is not a de Polignac number, because 30913073 - 2⁶ = 30913009 is a prime.

It is not a weakly prime, because it can be changed into another prime (30913033) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15456536 + 15456537.

It is an arithmetic number, because the mean of its divisors is an integer number (15456537).

Almost surely, 2^30913073 is an apocalyptic number.

It is an amenable number.

30913073 is a deficient number, since it is larger than the sum of its proper divisors (1).

30913073 is an equidigital number, since it uses as much as digits as its factorization.

30913073 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1701, while the sum is 26.

The square root of 30913073 is about 5559.9526077117. The cubic root of 30913073 is about 313.8441658485.

Adding to 30913073 its reverse (37031903), we get a palindrome (67944976).

The spelling of 30913073 in words is "thirty million, nine hundred thirteen thousand, seventy-three".