45031223 has 2 divisors, whose sum is σ = 45031224. Its totient is φ = 45031222.

The previous prime is 45031213. The next prime is 45031307. The reversal of 45031223 is 32213054.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 45031223 - 2¹² = 45027127 is a prime.

It is a super-2 number, since 2×45031223² = 4055622089751458, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 45031195 and 45031204.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (45031213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22515611 + 22515612.

It is an arithmetic number, because the mean of its divisors is an integer number (22515612).

Almost surely, 2^45031223 is an apocalyptic number.

45031223 is a deficient number, since it is larger than the sum of its proper divisors (1).

45031223 is an equidigital number, since it uses as much as digits as its factorization.

45031223 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 720, while the sum is 20.

The square root of 45031223 is about 6710.5307539717. The cubic root of 45031223 is about 355.7715757854.

Adding to 45031223 its reverse (32213054), we get a palindrome (77244277).

It can be divided in two parts, 45031 and 223, that added together give a palindrome (45254).

The spelling of 45031223 in words is "forty-five million, thirty-one thousand, two hundred twenty-three".