30349903 has 4 divisors (see below), whose sum is σ = 31669488. Its totient is φ = 29030320.

The previous prime is 30349889. The next prime is 30349927. The reversal of 30349903 is 30994303.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-30349903 is a prime.

It is a super-2 number, since 2×30349903² = 1842233224218818, which contains 22 as substring.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30349933) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 659758 + ... + 659803.

It is an arithmetic number, because the mean of its divisors is an integer number (7917372).

Almost surely, 2^30349903 is an apocalyptic number.

30349903 is a deficient number, since it is larger than the sum of its proper divisors (1319585).

30349903 is a wasteful number, since it uses less digits than its factorization.

30349903 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1319584.

The product of its (nonzero) digits is 8748, while the sum is 31.

The square root of 30349903 is about 5509.0746046863. The cubic root of 30349903 is about 311.9266174941.

The spelling of 30349903 in words is "thirty million, three hundred forty-nine thousand, nine hundred three".