202123320349 has 2 divisors, whose sum is σ = 202123320350. Its totient is φ = 202123320348.

The previous prime is 202123320307. The next prime is 202123320361. The reversal of 202123320349 is 943023321202.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 196819111449 + 5304208900 = 443643^2 + 72830^2 .

It is a cyclic number.

It is not a de Polignac number, because 202123320349 - 2¹¹ = 202123318301 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 202123320349.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (202123320449) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101061660174 + 101061660175.

It is an arithmetic number, because the mean of its divisors is an integer number (101061660175).

Almost surely, 2^202123320349 is an apocalyptic number.

It is an amenable number.

202123320349 is a deficient number, since it is larger than the sum of its proper divisors (1).

202123320349 is an equidigital number, since it uses as much as digits as its factorization.

202123320349 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15552, while the sum is 31.

The spelling of 202123320349 in words is "two hundred two billion, one hundred twenty-three million, three hundred twenty thousand, three hundred forty-nine".