20130310273 has 2 divisors, whose sum is σ = 20130310274. Its totient is φ = 20130310272.

The previous prime is 20130310267. The next prime is 20130310327. The reversal of 20130310273 is 37201303102.

It is a happy number.

Together with next prime (20130310327) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 19152622449 + 977687824 = 138393^2 + 31268^2 .

It is a cyclic number.

It is not a de Polignac number, because 20130310273 - 2¹³ = 20130302081 is a prime.

It is not a weakly prime, because it can be changed into another prime (20130310253) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10065155136 + 10065155137.

It is an arithmetic number, because the mean of its divisors is an integer number (10065155137).

Almost surely, 2^20130310273 is an apocalyptic number.

It is an amenable number.

20130310273 is a deficient number, since it is larger than the sum of its proper divisors (1).

20130310273 is an equidigital number, since it uses as much as digits as its factorization.

20130310273 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 756, while the sum is 22.

Adding to 20130310273 its reverse (37201303102), we get a palindrome (57331613375).

The spelling of 20130310273 in words is "twenty billion, one hundred thirty million, three hundred ten thousand, two hundred seventy-three".