313121001323453 has 2 divisors, whose sum is σ = 313121001323454. Its totient is φ = 313121001323452.

The previous prime is 313121001323411. The next prime is 313121001323479. The reversal of 313121001323453 is 354323100121313.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 208205189086489 + 104915812236964 = 14429317^2 + 10242842^2 .

It is a cyclic number.

It is not a de Polignac number, because 313121001323453 - 2¹⁶ = 313121001257917 is a prime.

It is a super-2 number, since 2×313121001323453² (a number of 30 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (313121001329453) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156560500661726 + 156560500661727.

It is an arithmetic number, because the mean of its divisors is an integer number (156560500661727).

Almost surely, 2^{313121001323453} is an apocalyptic number.

It is an amenable number.

313121001323453 is a deficient number, since it is larger than the sum of its proper divisors (1).

313121001323453 is an equidigital number, since it uses as much as digits as its factorization.

313121001323453 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 19440, while the sum is 32.

Adding to 313121001323453 its reverse (354323100121313), we get a palindrome (667444101444766).

The spelling of 313121001323453 in words is "three hundred thirteen trillion, one hundred twenty-one billion, one million, three hundred twenty-three thousand, four hundred fifty-three".