240312113 has 4 divisors (see below), whose sum is σ = 240343140. Its totient is φ = 240281088.

The previous prime is 240312109. The next prime is 240312139. The reversal of 240312113 is 311213042.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 176039824 + 64272289 = 13268^2 + 8017^2 .

It is a cyclic number.

It is not a de Polignac number, because 240312113 - 2² = 240312109 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 240312091 and 240312100.

It is not an unprimeable number, because it can be changed into a prime (240312103) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6881 + ... + 22977.

It is an arithmetic number, because the mean of its divisors is an integer number (60085785).

Almost surely, 2^240312113 is an apocalyptic number.

It is an amenable number.

240312113 is a deficient number, since it is larger than the sum of its proper divisors (31027).

240312113 is a wasteful number, since it uses less digits than its factorization.

240312113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31026.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 240312113 is about 15502.0035156750. The cubic root of 240312113 is about 621.7157755131.

Adding to 240312113 its reverse (311213042), we get a palindrome (551525155).

The spelling of 240312113 in words is "two hundred forty million, three hundred twelve thousand, one hundred thirteen".