307540512243 has 12 divisors (see below), whose sum is σ = 444444364728. Its totient is φ = 204925848000.

The previous prime is 307540512229. The next prime is 307540512271. The reversal of 307540512243 is 342215045703.

307540512243 is a `hidden beast` number, since 3 + 0 + 7 + 5 + 405 + 1 + 2 + 243 = 666.

It is not a de Polignac number, because 307540512243 - 2¹⁷ = 307540381171 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 307540512198 and 307540512207.

It is not an unprimeable number, because it can be changed into a prime (307540512203) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8410758 + ... + 8447243.

It is an arithmetic number, because the mean of its divisors is an integer number (37037030394).

Almost surely, 2^307540512243 is an apocalyptic number.

307540512243 is a deficient number, since it is larger than the sum of its proper divisors (136903852485).

307540512243 is a wasteful number, since it uses less digits than its factorization.

307540512243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16860034 (or 16860031 counting only the distinct ones).

The product of its (nonzero) digits is 100800, while the sum is 36.

Adding to 307540512243 its reverse (342215045703), we get a palindrome (649755557946).

The spelling of 307540512243 in words is "three hundred seven billion, five hundred forty million, five hundred twelve thousand, two hundred forty-three".