103213105045 has 4 divisors (see below), whose sum is σ = 123855726060. Its totient is φ = 82570484032.

The previous prime is 103213105007. The next prime is 103213105103. The reversal of 103213105045 is 540501312301.

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 25102916721 + 78110188324 = 158439^2 + 279482^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-103213105045 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10321310500 + ... + 10321310509.

It is an arithmetic number, because the mean of its divisors is an integer number (30963931515).

Almost surely, 2^103213105045 is an apocalyptic number.

It is an amenable number.

103213105045 is a deficient number, since it is larger than the sum of its proper divisors (20642621015).

103213105045 is an equidigital number, since it uses as much as digits as its factorization.

103213105045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20642621014.

The product of its (nonzero) digits is 1800, while the sum is 25.

Adding to 103213105045 its reverse (540501312301), we get a palindrome (643714417346).

The spelling of 103213105045 in words is "one hundred three billion, two hundred thirteen million, one hundred five thousand, forty-five".