30970225 has 24 divisors (see below), whose sum is σ = 45122112. Its totient is φ = 20788800.

The previous prime is 30970207. The next prime is 30970229. The reversal of 30970225 is 52207903.

It is not a de Polignac number, because 30970225 - 2¹¹ = 30968177 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 30970193 and 30970202.

It is not an unprimeable number, because it can be changed into a prime (30970229) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 757 + ... + 7906.

It is an arithmetic number, because the mean of its divisors is an integer number (1880088).

Almost surely, 2^30970225 is an apocalyptic number.

It is an amenable number.

30970225 is a deficient number, since it is larger than the sum of its proper divisors (14151887).

30970225 is a wasteful number, since it uses less digits than its factorization.

30970225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8697 (or 8692 counting only the distinct ones).

The product of its (nonzero) digits is 3780, while the sum is 28.

The square root of 30970225 is about 5565.0898465344. The cubic root of 30970225 is about 314.0374581735.

The spelling of 30970225 in words is "thirty million, nine hundred seventy thousand, two hundred twenty-five".