243103481 has 2 divisors, whose sum is σ = 243103482. Its totient is φ = 243103480.

The previous prime is 243103459. The next prime is 243103493. The reversal of 243103481 is 184301342.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 217297081 + 25806400 = 14741^2 + 5080^2 .

It is a cyclic number.

It is not a de Polignac number, because 243103481 - 2²⁶ = 175994617 is a prime.

It is a super-2 number, since 2×243103481² = 118198604948634722, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 243103481.

It is a weakly prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121551740 + 121551741.

It is an arithmetic number, because the mean of its divisors is an integer number (121551741).

Almost surely, 2^243103481 is an apocalyptic number.

It is an amenable number.

243103481 is a deficient number, since it is larger than the sum of its proper divisors (1).

243103481 is an equidigital number, since it uses as much as digits as its factorization.

243103481 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2304, while the sum is 26.

The square root of 243103481 is about 15591.7760694541. The cubic root of 243103481 is about 624.1137142435.

The spelling of 243103481 in words is "two hundred forty-three million, one hundred three thousand, four hundred eighty-one".