224351031321 has 6 divisors (see below), whose sum is σ = 324062600810. Its totient is φ = 149567354208.

The previous prime is 224351031277. The next prime is 224351031337. The reversal of 224351031321 is 123130153422.

It can be written as a sum of positive squares in only one way, i.e., 215352611721 + 8998419600 = 464061^2 + 94860^2 .

It is not a de Polignac number, because 224351031321 - 2⁷ = 224351031193 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (224351031371) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 12463946176 + ... + 12463946193.

Almost surely, 2^224351031321 is an apocalyptic number.

It is an amenable number.

224351031321 is a deficient number, since it is larger than the sum of its proper divisors (99711569489).

224351031321 is a wasteful number, since it uses less digits than its factorization.

224351031321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24927892375 (or 24927892372 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 27.

Adding to 224351031321 its reverse (123130153422), we get a palindrome (347481184743).

The spelling of 224351031321 in words is "two hundred twenty-four billion, three hundred fifty-one million, thirty-one thousand, three hundred twenty-one".