240606431 has 4 divisors (see below), whose sum is σ = 259114632. Its totient is φ = 222098232.

The previous prime is 240606413. The next prime is 240606437. The reversal of 240606431 is 134606042.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 134606042 = 2 ⋅67303021.

It is a cyclic number.

It is not a de Polignac number, because 240606431 - 2¹⁴ = 240590047 is a prime.

It is a super-3 number, since 3×240606431³ (a number of 26 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 240606431.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (240606437) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9254081 + ... + 9254106.

It is an arithmetic number, because the mean of its divisors is an integer number (64778658).

Almost surely, 2^240606431 is an apocalyptic number.

240606431 is a deficient number, since it is larger than the sum of its proper divisors (18508201).

240606431 is a wasteful number, since it uses less digits than its factorization.

240606431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18508200.

The product of its (nonzero) digits is 3456, while the sum is 26.

The square root of 240606431 is about 15511.4935128762. The cubic root of 240606431 is about 621.9694837577.

The spelling of 240606431 in words is "two hundred forty million, six hundred six thousand, four hundred thirty-one".