30496813 has 2 divisors, whose sum is σ = 30496814. Its totient is φ = 30496812.

The previous prime is 30496771. The next prime is 30496877. The reversal of 30496813 is 31869403.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 29452329 + 1044484 = 5427^2 + 1022^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-30496813 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30496913) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15248406 + 15248407.

It is an arithmetic number, because the mean of its divisors is an integer number (15248407).

Almost surely, 2^30496813 is an apocalyptic number.

It is an amenable number.

30496813 is a deficient number, since it is larger than the sum of its proper divisors (1).

30496813 is an equidigital number, since it uses as much as digits as its factorization.

30496813 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15552, while the sum is 34.

The square root of 30496813 is about 5522.3919636332. The cubic root of 30496813 is about 312.4291056246.

The spelling of 30496813 in words is "thirty million, four hundred ninety-six thousand, eight hundred thirteen".