20110311253 has 2 divisors, whose sum is σ = 20110311254. Its totient is φ = 20110311252.

The previous prime is 20110311239. The next prime is 20110311259. The reversal of 20110311253 is 35211301102.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 14156954289 + 5953356964 = 118983^2 + 77158^2 .

It is a cyclic number.

It is not a de Polignac number, because 20110311253 - 2⁹ = 20110310741 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20110311253.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20110311259) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10055155626 + 10055155627.

It is an arithmetic number, because the mean of its divisors is an integer number (10055155627).

Almost surely, 2^20110311253 is an apocalyptic number.

It is an amenable number.

20110311253 is a deficient number, since it is larger than the sum of its proper divisors (1).

20110311253 is an equidigital number, since it uses as much as digits as its factorization.

20110311253 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 180, while the sum is 19.

Adding to 20110311253 its reverse (35211301102), we get a palindrome (55321612355).

The spelling of 20110311253 in words is "twenty billion, one hundred ten million, three hundred eleven thousand, two hundred fifty-three".