202243973 has 2 divisors, whose sum is σ = 202243974. Its totient is φ = 202243972.

The previous prime is 202243963. The next prime is 202244023. The reversal of 202243973 is 379342202.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 158180929 + 44063044 = 12577^2 + 6638^2 .

It is a cyclic number.

It is not a de Polignac number, because 202243973 - 2¹⁰ = 202242949 is a prime.

It is a super-2 number, since 2×202243973² = 81805249229649458, which 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 (202243913) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101121986 + 101121987.

It is an arithmetic number, because the mean of its divisors is an integer number (101121987).

Almost surely, 2^202243973 is an apocalyptic number.

It is an amenable number.

202243973 is a deficient number, since it is larger than the sum of its proper divisors (1).

202243973 is an equidigital number, since it uses as much as digits as its factorization.

202243973 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18144, while the sum is 32.

The square root of 202243973 is about 14221.2507537136. The cubic root of 202243973 is about 586.9825574019.

The spelling of 202243973 in words is "two hundred two million, two hundred forty-three thousand, nine hundred seventy-three".