204224101031 has 2 divisors, whose sum is σ = 204224101032. Its totient is φ = 204224101030.

The previous prime is 204224101013. The next prime is 204224101073. The reversal of 204224101031 is 130101422402.

Together with previous prime (204224101013) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-204224101031 is a prime.

It is a super-2 number, since 2×204224101031² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 204224100994 and 204224101012.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (204224101231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102112050515 + 102112050516.

It is an arithmetic number, because the mean of its divisors is an integer number (102112050516).

Almost surely, 2^204224101031 is an apocalyptic number.

204224101031 is a deficient number, since it is larger than the sum of its proper divisors (1).

204224101031 is an equidigital number, since it uses as much as digits as its factorization.

204224101031 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 204224101031 its reverse (130101422402), we get a palindrome (334325523433).

The spelling of 204224101031 in words is "two hundred four billion, two hundred twenty-four million, one hundred one thousand, thirty-one".