30977361 has 6 divisors (see below), whose sum is σ = 44745090. Its totient is φ = 20651568.

The previous prime is 30977357. The next prime is 30977363. The reversal of 30977361 is 16377903.

It can be written as a sum of positive squares in only one way, i.e., 28515600 + 2461761 = 5340^2 + 1569^2 .

It is not a de Polignac number, because 30977361 - 2² = 30977357 is a prime.

It is not an unprimeable number, because it can be changed into a prime (30977363) 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 5 ways as a sum of consecutive naturals, for example, 1720956 + ... + 1720973.

It is an arithmetic number, because the mean of its divisors is an integer number (7457515).

Almost surely, 2^30977361 is an apocalyptic number.

It is an amenable number.

30977361 is a deficient number, since it is larger than the sum of its proper divisors (13767729).

30977361 is a wasteful number, since it uses less digits than its factorization.

30977361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3441935 (or 3441932 counting only the distinct ones).

The product of its (nonzero) digits is 23814, while the sum is 36.

The square root of 30977361 is about 5565.7309493004. The cubic root of 30977361 is about 314.0615759533.

The spelling of 30977361 in words is "thirty million, nine hundred seventy-seven thousand, three hundred sixty-one".