240085531 has 4 divisors (see below), whose sum is σ = 274383472. Its totient is φ = 205787592.

The previous prime is 240085529. The next prime is 240085603. The reversal of 240085531 is 135580042.

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

It is a cyclic number.

It is not a de Polignac number, because 240085531 - 2¹ = 240085529 is a prime.

It is a super-2 number, since 2×240085531² = 115282124391103922, which contains 22 as substring.

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 240085531.

It is not an unprimeable number, because it can be changed into a prime (240085931) 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, 17148960 + ... + 17148973.

It is an arithmetic number, because the mean of its divisors is an integer number (68595868).

Almost surely, 2^240085531 is an apocalyptic number.

240085531 is a deficient number, since it is larger than the sum of its proper divisors (34297941).

240085531 is an equidigital number, since it uses as much as digits as its factorization.

240085531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34297940.

The product of its (nonzero) digits is 4800, while the sum is 28.

The square root of 240085531 is about 15494.6936400821. The cubic root of 240085531 is about 621.5203159515.

The spelling of 240085531 in words is "two hundred forty million, eighty-five thousand, five hundred thirty-one".