947121230 has 32 divisors (see below), whose sum is σ = 1861816320. Its totient is φ = 344034720.

The previous prime is 947121229. The next prime is 947121233. The reversal of 947121230 is 32121749.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 947121193 and 947121202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (947121233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 110147 + ... + 118433.

It is an arithmetic number, because the mean of its divisors is an integer number (58181760).

Almost surely, 2^947121230 is an apocalyptic number.

947121230 is a deficient number, since it is larger than the sum of its proper divisors (914695090).

947121230 is a wasteful number, since it uses less digits than its factorization.

947121230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9344.

The product of its (nonzero) digits is 3024, while the sum is 29.

The square root of 947121230 is about 30775.3347666601. The cubic root of 947121230 is about 982.0535966256.

Adding to 947121230 its reverse (32121749), we get a palindrome (979242979).

The spelling of 947121230 in words is "nine hundred forty-seven million, one hundred twenty-one thousand, two hundred thirty".