225303031 has 2 divisors, whose sum is σ = 225303032. Its totient is φ = 225303030.

The previous prime is 225303019. The next prime is 225303047. The reversal of 225303031 is 130303522.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 225303031 - 2⁵ = 225302999 is a prime.

It is a super-2 number, since 2×225303031² = 101522911555573922, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (225303011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 112651515 + 112651516.

It is an arithmetic number, because the mean of its divisors is an integer number (112651516).

Almost surely, 2^225303031 is an apocalyptic number.

225303031 is a deficient number, since it is larger than the sum of its proper divisors (1).

225303031 is an equidigital number, since it uses as much as digits as its factorization.

225303031 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 540, while the sum is 19.

The square root of 225303031 is about 15010.0976345925. The cubic root of 225303031 is about 608.4931282894.

Adding to 225303031 its reverse (130303522), we get a palindrome (355606553).

The spelling of 225303031 in words is "two hundred twenty-five million, three hundred three thousand, thirty-one".