2240331561 has 16 divisors (see below), whose sum is σ = 3574318720. Its totient is φ = 1378665360.

The previous prime is 2240331547. The next prime is 2240331593. The reversal of 2240331561 is 1651330422.

It is a de Polignac number, because none of the positive numbers 2^k-2240331561 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2240331361) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3191005 + ... + 3191706.

It is an arithmetic number, because the mean of its divisors is an integer number (223394920).

Almost surely, 2^2240331561 is an apocalyptic number.

It is an amenable number.

2240331561 is a deficient number, since it is larger than the sum of its proper divisors (1333987159).

2240331561 is a wasteful number, since it uses less digits than its factorization.

2240331561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6382733 (or 6382727 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 27.

The square root of 2240331561 is about 47332.1408875618. The cubic root of 2240331561 is about 1308.4910779153.

Adding to 2240331561 its reverse (1651330422), we get a palindrome (3891661983).

The spelling of 2240331561 in words is "two billion, two hundred forty million, three hundred thirty-one thousand, five hundred sixty-one".