30920361 has 8 divisors (see below), whose sum is σ = 42557184. Its totient is φ = 19948560.

The previous prime is 30920347. The next prime is 30920377. The reversal of 30920361 is 16302903.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 30920361 - 2⁹ = 30919849 is a prime.

It is not an unprimeable number, because it can be changed into a prime (30920321) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 166146 + ... + 166331.

It is an arithmetic number, because the mean of its divisors is an integer number (5319648).

Almost surely, 2^30920361 is an apocalyptic number.

30920361 is a gapful number since it is divisible by the number (31) formed by its first and last digit.

It is an amenable number.

30920361 is a deficient number, since it is larger than the sum of its proper divisors (11636823).

30920361 is a wasteful number, since it uses less digits than its factorization.

30920361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 332511.

The product of its (nonzero) digits is 972, while the sum is 24.

The square root of 30920361 is about 5560.6079703572. The cubic root of 30920361 is about 313.8688276537.

The spelling of 30920361 in words is "thirty million, nine hundred twenty thousand, three hundred sixty-one".