213122232987353 has 2 divisors, whose sum is σ = 213122232987354. Its totient is φ = 213122232987352.

The previous prime is 213122232987311. The next prime is 213122232987359. The reversal of 213122232987353 is 353789232221312.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 204946796617369 + 8175436369984 = 14315963^2 + 2859272^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-213122232987353 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 213122232987295 and 213122232987304.

It is not a weakly prime, because it can be changed into another prime (213122232987359) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106561116493676 + 106561116493677.

It is an arithmetic number, because the mean of its divisors is an integer number (106561116493677).

Almost surely, 2^{213122232987353} is an apocalyptic number.

It is an amenable number.

213122232987353 is a deficient number, since it is larger than the sum of its proper divisors (1).

213122232987353 is an equidigital number, since it uses as much as digits as its factorization.

213122232987353 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6531840, while the sum is 53.

The spelling of 213122232987353 in words is "two hundred thirteen trillion, one hundred twenty-two billion, two hundred thirty-two million, nine hundred eighty-seven thousand, three hundred fifty-three".