243113461 has 2 divisors, whose sum is σ = 243113462. Its totient is φ = 243113460.

The previous prime is 243113441. The next prime is 243113483. The reversal of 243113461 is 164311342.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 166900561 + 76212900 = 12919^2 + 8730^2 .

It is a cyclic number.

It is not a de Polignac number, because 243113461 - 2⁹ = 243112949 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (243113411) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121556730 + 121556731.

It is an arithmetic number, because the mean of its divisors is an integer number (121556731).

Almost surely, 2^243113461 is an apocalyptic number.

It is an amenable number.

243113461 is a deficient number, since it is larger than the sum of its proper divisors (1).

243113461 is an equidigital number, since it uses as much as digits as its factorization.

243113461 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1728, while the sum is 25.

The square root of 243113461 is about 15592.0961066817. The cubic root of 243113461 is about 624.1222545979.

It can be divided in two parts, 24311 and 3461, that added together give a palindrome (27772).

The spelling of 243113461 in words is "two hundred forty-three million, one hundred thirteen thousand, four hundred sixty-one".