30673813 has 2 divisors, whose sum is σ = 30673814. Its totient is φ = 30673812.

The previous prime is 30673807. The next prime is 30673823. The reversal of 30673813 is 31837603.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 29669809 + 1004004 = 5447^2 + 1002^2 .

It is a cyclic number.

It is not a de Polignac number, because 30673813 - 2¹⁷ = 30542741 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30673823) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15336906 + 15336907.

It is an arithmetic number, because the mean of its divisors is an integer number (15336907).

Almost surely, 2^30673813 is an apocalyptic number.

It is an amenable number.

30673813 is a deficient number, since it is larger than the sum of its proper divisors (1).

30673813 is an equidigital number, since it uses as much as digits as its factorization.

30673813 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9072, while the sum is 31.

The square root of 30673813 is about 5538.3944424355. The cubic root of 30673813 is about 313.0323742402.

The spelling of 30673813 in words is "thirty million, six hundred seventy-three thousand, eight hundred thirteen".