202231309949 has 2 divisors, whose sum is σ = 202231309950. Its totient is φ = 202231309948.

The previous prime is 202231309909. The next prime is 202231310011. The reversal of 202231309949 is 949903132202.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 183175440100 + 19055869849 = 427990^2 + 138043^2 .

It is a cyclic number.

It is not a de Polignac number, because 202231309949 - 2²⁸ = 201962874493 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (202231309909) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101115654974 + 101115654975.

It is an arithmetic number, because the mean of its divisors is an integer number (101115654975).

Almost surely, 2^202231309949 is an apocalyptic number.

It is an amenable number.

202231309949 is a deficient number, since it is larger than the sum of its proper divisors (1).

202231309949 is an equidigital number, since it uses as much as digits as its factorization.

202231309949 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 209952, while the sum is 44.

The spelling of 202231309949 in words is "two hundred two billion, two hundred thirty-one million, three hundred nine thousand, nine hundred forty-nine".