8213230251 has 32 divisors (see below), whose sum is σ = 12232281600. Its totient is φ = 5446530720.

The previous prime is 8213230183. The next prime is 8213230261. The reversal of 8213230251 is 1520323128.

8213230251 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a de Polignac number, because none of the positive numbers 2^k-8213230251 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (8213230261) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6953881 + ... + 6955061.

It is an arithmetic number, because the mean of its divisors is an integer number (382258800).

Almost surely, 2^8213230251 is an apocalyptic number.

8213230251 is a deficient number, since it is larger than the sum of its proper divisors (4019051349).

8213230251 is a wasteful number, since it uses less digits than its factorization.

8213230251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2336 (or 2330 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

The square root of 8213230251 is about 90626.8737792494. The cubic root of 8213230251 is about 2017.6136125403.

Adding to 8213230251 its reverse (1520323128), we get a palindrome (9733553379).

The spelling of 8213230251 in words is "eight billion, two hundred thirteen million, two hundred thirty thousand, two hundred fifty-one".