210346331845 has 32 divisors (see below), whose sum is σ = 276640344288. Its totient is φ = 152608555008.

The previous prime is 210346331827. The next prime is 210346331929. The reversal of 210346331845 is 548133643012.

It is a happy number.

It can be written as a sum of positive squares in 16 ways, for example, as 145678859041 + 64667472804 = 381679^2 + 254298^2 .

It is not a de Polignac number, because 210346331845 - 2⁵ = 210346331813 is a prime.

It is a super-2 number, since 2×210346331845² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 210346331798 and 210346331807.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 742027 + ... + 985543.

It is an arithmetic number, because the mean of its divisors is an integer number (8645010759).

Almost surely, 2^210346331845 is an apocalyptic number.

It is an amenable number.

210346331845 is a deficient number, since it is larger than the sum of its proper divisors (66294012443).

210346331845 is a wasteful number, since it uses less digits than its factorization.

210346331845 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 243769.

The product of its (nonzero) digits is 207360, while the sum is 40.

Adding to 210346331845 its reverse (548133643012), we get a palindrome (758479974857).

The spelling of 210346331845 in words is "two hundred ten billion, three hundred forty-six million, three hundred thirty-one thousand, eight hundred forty-five".