240542304531 has 16 divisors (see below), whose sum is σ = 327572272128. Its totient is φ = 156937464000.

The previous prime is 240542304517. The next prime is 240542304551. The reversal of 240542304531 is 135403245042.

It is not a de Polignac number, because 240542304531 - 2⁹ = 240542304019 is a prime.

It is a super-2 number, since 2×240542304531² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 240542304492 and 240542304501.

It is not an unprimeable number, because it can be changed into a prime (240542304551) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1993071 + ... + 2110311.

It is an arithmetic number, because the mean of its divisors is an integer number (20473267008).

Almost surely, 2^240542304531 is an apocalyptic number.

240542304531 is a deficient number, since it is larger than the sum of its proper divisors (87029967597).

240542304531 is a wasteful number, since it uses less digits than its factorization.

240542304531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131842.

The product of its (nonzero) digits is 57600, while the sum is 33.

Adding to 240542304531 its reverse (135403245042), we get a palindrome (375945549573).

The spelling of 240542304531 in words is "two hundred forty billion, five hundred forty-two million, three hundred four thousand, five hundred thirty-one".