145303213105 has 4 divisors (see below), whose sum is σ = 174363855732. Its totient is φ = 116242570480.

The previous prime is 145303213103. The next prime is 145303213117. The reversal of 145303213105 is 501312303541.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 33405603984 + 111897609121 = 182772^2 + 334511^2 .

It is not a de Polignac number, because 145303213105 - 2¹ = 145303213103 is a prime.

It is a super-2 number, since 2×145303213105² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (145303213103) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14530321306 + ... + 14530321315.

It is an arithmetic number, because the mean of its divisors is an integer number (43590963933).

Almost surely, 2^145303213105 is an apocalyptic number.

It is an amenable number.

145303213105 is a deficient number, since it is larger than the sum of its proper divisors (29060642627).

145303213105 is an equidigital number, since it uses as much as digits as its factorization.

145303213105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29060642626.

The product of its (nonzero) digits is 5400, while the sum is 28.

Adding to 145303213105 its reverse (501312303541), we get a palindrome (646615516646).

The spelling of 145303213105 in words is "one hundred forty-five billion, three hundred three million, two hundred thirteen thousand, one hundred five".