210120313453 has 2 divisors, whose sum is σ = 210120313454. Its totient is φ = 210120313452.

The previous prime is 210120313433. The next prime is 210120313471. The reversal of 210120313453 is 354313021012.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 165488680809 + 44631632644 = 406803^2 + 211262^2 .

It is a cyclic number.

It is not a de Polignac number, because 210120313453 - 2¹⁷ = 210120182381 is a prime.

It is a super-2 number, since 2×210120313453² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (210120313433) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105060156726 + 105060156727.

It is an arithmetic number, because the mean of its divisors is an integer number (105060156727).

Almost surely, 2^210120313453 is an apocalyptic number.

It is an amenable number.

210120313453 is a deficient number, since it is larger than the sum of its proper divisors (1).

210120313453 is an equidigital number, since it uses as much as digits as its factorization.

210120313453 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2160, while the sum is 25.

Adding to 210120313453 its reverse (354313021012), we get a palindrome (564433334465).

The spelling of 210120313453 in words is "two hundred ten billion, one hundred twenty million, three hundred thirteen thousand, four hundred fifty-three".