243351000253 has 2 divisors, whose sum is σ = 243351000254. Its totient is φ = 243351000252.

The previous prime is 243351000203. The next prime is 243351000283. The reversal of 243351000253 is 352000153342.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 243307400644 + 43599609 = 493262^2 + 6603^2 .

It is a cyclic number.

It is not a de Polignac number, because 243351000253 - 2¹³ = 243350992061 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (243351000203) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121675500126 + 121675500127.

It is an arithmetic number, because the mean of its divisors is an integer number (121675500127).

Almost surely, 2^243351000253 is an apocalyptic number.

It is an amenable number.

243351000253 is a deficient number, since it is larger than the sum of its proper divisors (1).

243351000253 is an equidigital number, since it uses as much as digits as its factorization.

243351000253 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10800, while the sum is 28.

Adding to 243351000253 its reverse (352000153342), we get a palindrome (595351153595).

The spelling of 243351000253 in words is "two hundred forty-three billion, three hundred fifty-one million, two hundred fifty-three", and thus it is an aban number.