240312315545 has 4 divisors (see below), whose sum is σ = 288374778660. Its totient is φ = 192249852432.

The previous prime is 240312315499. The next prime is 240312315589. The reversal of 240312315545 is 545513213042.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 138999971929 + 101312343616 = 372827^2 + 318296^2 .

It is a cyclic number.

It is not a de Polignac number, because 240312315545 - 2²² = 240308121241 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24031231550 + ... + 24031231559.

It is an arithmetic number, because the mean of its divisors is an integer number (72093694665).

Almost surely, 2^240312315545 is an apocalyptic number.

It is an amenable number.

240312315545 is a deficient number, since it is larger than the sum of its proper divisors (48062463115).

240312315545 is an equidigital number, since it uses as much as digits as its factorization.

240312315545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48062463114.

The product of its (nonzero) digits is 72000, while the sum is 35.

Adding to 240312315545 its reverse (545513213042), we get a palindrome (785825528587).

The spelling of 240312315545 in words is "two hundred forty billion, three hundred twelve million, three hundred fifteen thousand, five hundred forty-five".