245343431243213 has 2 divisors, whose sum is σ = 245343431243214. Its totient is φ = 245343431243212.

The previous prime is 245343431243149. The next prime is 245343431243233. The reversal of 245343431243213 is 312342134343542.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 134352718287844 + 110990712955369 = 11591062^2 + 10535213^2 .

It is a cyclic number.

It is not a de Polignac number, because 245343431243213 - 2⁶ = 245343431243149 is a prime.

It is a super-3 number, since 3×245343431243213³ (a number of 44 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (245343431243233) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 122671715621606 + 122671715621607.

It is an arithmetic number, because the mean of its divisors is an integer number (122671715621607).

Almost surely, 2^{245343431243213} is an apocalyptic number.

It is an amenable number.

245343431243213 is a deficient number, since it is larger than the sum of its proper divisors (1).

245343431243213 is an equidigital number, since it uses as much as digits as its factorization.

245343431243213 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2488320, while the sum is 44.

Adding to 245343431243213 its reverse (312342134343542), we get a palindrome (557685565586755).

The spelling of 245343431243213 in words is "two hundred forty-five trillion, three hundred forty-three billion, four hundred thirty-one million, two hundred forty-three thousand, two hundred thirteen".