2256630321 has 16 divisors (see below), whose sum is σ = 3313052928. Its totient is φ = 1354870800.

The previous prime is 2256630301. The next prime is 2256630329. The reversal of 2256630321 is 1230366522.

It is not a de Polignac number, because 2256630321 - 2¹⁴ = 2256613937 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2256630329) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 316015 + ... + 323076.

It is an arithmetic number, because the mean of its divisors is an integer number (207065808).

Almost surely, 2^2256630321 is an apocalyptic number.

It is an amenable number.

2256630321 is a deficient number, since it is larger than the sum of its proper divisors (1056422607).

2256630321 is a wasteful number, since it uses less digits than its factorization.

2256630321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 639212.

The product of its (nonzero) digits is 12960, while the sum is 30.

The square root of 2256630321 is about 47504.0032102559. The cubic root of 2256630321 is about 1311.6565723874.

Adding to 2256630321 its reverse (1230366522), we get a palindrome (3486996843).

The spelling of 2256630321 in words is "two billion, two hundred fifty-six million, six hundred thirty thousand, three hundred twenty-one".