240678131 has 2 divisors, whose sum is σ = 240678132. Its totient is φ = 240678130.

The previous prime is 240678107. The next prime is 240678133. The reversal of 240678131 is 131876042.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-240678131 is a prime.

It is a super-2 number, since 2×240678131² = 115851925483306322, which contains 22 as substring.

It is a Sophie Germain prime.

Together with 240678133, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (240678133) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 120339065 + 120339066.

It is an arithmetic number, because the mean of its divisors is an integer number (120339066).

Almost surely, 2^240678131 is an apocalyptic number.

240678131 is a deficient number, since it is larger than the sum of its proper divisors (1).

240678131 is an equidigital number, since it uses as much as digits as its factorization.

240678131 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8064, while the sum is 32.

The square root of 240678131 is about 15513.8045301596. The cubic root of 240678131 is about 622.0312593065.

The spelling of 240678131 in words is "two hundred forty million, six hundred seventy-eight thousand, one hundred thirty-one".