220312045 has 4 divisors (see below), whose sum is σ = 264374460. Its totient is φ = 176249632.

The previous prime is 220312039. The next prime is 220312051. The reversal of 220312045 is 540213022.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (220312039) and next prime (220312051).

It can be written as a sum of positive squares in 2 ways, for example, as 131537961 + 88774084 = 11469^2 + 9422^2 .

It is a cyclic number.

It is not a de Polignac number, because 220312045 - 2²⁷ = 86094317 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22031200 + ... + 22031209.

It is an arithmetic number, because the mean of its divisors is an integer number (66093615).

Almost surely, 2^220312045 is an apocalyptic number.

It is an amenable number.

220312045 is a deficient number, since it is larger than the sum of its proper divisors (44062415).

220312045 is an equidigital number, since it uses as much as digits as its factorization.

220312045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44062414.

The product of its (nonzero) digits is 480, while the sum is 19.

The square root of 220312045 is about 14842.9122816245. The cubic root of 220312045 is about 603.9663565095.

Adding to 220312045 its reverse (540213022), we get a palindrome (760525067).

The spelling of 220312045 in words is "two hundred twenty million, three hundred twelve thousand, forty-five".