30955147 has 4 divisors (see below), whose sum is σ = 32776056. Its totient is φ = 29134240.

The previous prime is 30955129. The next prime is 30955153. The reversal of 30955147 is 74155903.

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

It is a cyclic number.

It is not a de Polignac number, because 30955147 - 2¹¹ = 30953099 is a prime.

It is a super-2 number, since 2×30955147² = 1916442251583218, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30955247) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 910429 + ... + 910462.

It is an arithmetic number, because the mean of its divisors is an integer number (8194014).

Almost surely, 2^30955147 is an apocalyptic number.

30955147 is a deficient number, since it is larger than the sum of its proper divisors (1820909).

30955147 is a wasteful number, since it uses less digits than its factorization.

30955147 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1820908.

The product of its (nonzero) digits is 18900, while the sum is 34.

The square root of 30955147 is about 5563.7349864996. The cubic root of 30955147 is about 313.9864863618.

The spelling of 30955147 in words is "thirty million, nine hundred fifty-five thousand, one hundred forty-seven".