30813803 has 2 divisors, whose sum is σ = 30813804. Its totient is φ = 30813802.

The previous prime is 30813791. The next prime is 30813817. The reversal of 30813803 is 30831803.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 30813803 - 2²² = 26619499 is a prime.

It is not a weakly prime, because it can be changed into another prime (30813703) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15406901 + 15406902.

It is an arithmetic number, because the mean of its divisors is an integer number (15406902).

Almost surely, 2^30813803 is an apocalyptic number.

30813803 is a deficient number, since it is larger than the sum of its proper divisors (1).

30813803 is an equidigital number, since it uses as much as digits as its factorization.

30813803 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1728, while the sum is 26.

The square root of 30813803 is about 5551.0181948900. The cubic root of 30813803 is about 313.5078602423.

The spelling of 30813803 in words is "thirty million, eight hundred thirteen thousand, eight hundred three".