30345977 has 4 divisors (see below), whose sum is σ = 31392420. Its totient is φ = 29299536.

The previous prime is 30345967. The next prime is 30345979. The reversal of 30345977 is 77954303.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 77954303 = 7 ⋅11136329.

It can be written as a sum of positive squares in 2 ways, for example, as 10086976 + 20259001 = 3176^2 + 4501^2 .

It is a cyclic number.

It is not a de Polignac number, because 30345977 - 2¹⁰ = 30344953 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 30345977.

It is not an unprimeable number, because it can be changed into a prime (30345979) 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, 523178 + ... + 523235.

It is an arithmetic number, because the mean of its divisors is an integer number (7848105).

Almost surely, 2^30345977 is an apocalyptic number.

It is an amenable number.

30345977 is a deficient number, since it is larger than the sum of its proper divisors (1046443).

30345977 is a wasteful number, since it uses less digits than its factorization.

30345977 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1046442.

The product of its (nonzero) digits is 79380, while the sum is 38.

The square root of 30345977 is about 5508.7182719758. The cubic root of 30345977 is about 311.9131668558.

The spelling of 30345977 in words is "thirty million, three hundred forty-five thousand, nine hundred seventy-seven".