223631330231 has 2 divisors, whose sum is σ = 223631330232. Its totient is φ = 223631330230.

The previous prime is 223631330201. The next prime is 223631330269. The reversal of 223631330231 is 132033136322.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-223631330231 is a prime.

It is a super-2 number, since 2×223631330231² (a number of 24 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a junction number, because it is equal to n+sod(n) for n = 223631330194 and 223631330203.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (223631330201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111815665115 + 111815665116.

It is an arithmetic number, because the mean of its divisors is an integer number (111815665116).

Almost surely, 2^223631330231 is an apocalyptic number.

223631330231 is a deficient number, since it is larger than the sum of its proper divisors (1).

223631330231 is an equidigital number, since it uses as much as digits as its factorization.

223631330231 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11664, while the sum is 29.

Adding to 223631330231 its reverse (132033136322), we get a palindrome (355664466553).

The spelling of 223631330231 in words is "two hundred twenty-three billion, six hundred thirty-one million, three hundred thirty thousand, two hundred thirty-one".