240534312115309 has 2 divisors, whose sum is σ = 240534312115310. Its totient is φ = 240534312115308.

The previous prime is 240534312115283. The next prime is 240534312115337. The reversal of 240534312115309 is 903511213435042.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 236906830001284 + 3627482114025 = 15391778^2 + 1904595^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-240534312115309 is a prime.

It is a super-2 number, since 2×240534312115309² (a number of 30 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (240534312185309) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 120267156057654 + 120267156057655.

It is an arithmetic number, because the mean of its divisors is an integer number (120267156057655).

Almost surely, 2^{240534312115309} is an apocalyptic number.

It is an amenable number.

240534312115309 is a deficient number, since it is larger than the sum of its proper divisors (1).

240534312115309 is an equidigital number, since it uses as much as digits as its factorization.

240534312115309 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 388800, while the sum is 43.

The spelling of 240534312115309 in words is "two hundred forty trillion, five hundred thirty-four billion, three hundred twelve million, one hundred fifteen thousand, three hundred nine".