45305231 has 2 divisors, whose sum is σ = 45305232. Its totient is φ = 45305230.

The previous prime is 45305209. The next prime is 45305237. The reversal of 45305231 is 13250354.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 45305231 - 2¹⁸ = 45043087 is a prime.

It is a super-2 number, since 2×45305231² = 4105127911926722, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 45305197 and 45305206.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (45305237) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22652615 + 22652616.

It is an arithmetic number, because the mean of its divisors is an integer number (22652616).

Almost surely, 2^45305231 is an apocalyptic number.

45305231 is a deficient number, since it is larger than the sum of its proper divisors (1).

45305231 is an equidigital number, since it uses as much as digits as its factorization.

45305231 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1800, while the sum is 23.

The square root of 45305231 is about 6730.9160594974. The cubic root of 45305231 is about 356.4917220279.

Adding to 45305231 its reverse (13250354), we get a palindrome (58555585).

The spelling of 45305231 in words is "forty-five million, three hundred five thousand, two hundred thirty-one".