22031303240 has 16 divisors (see below), whose sum is σ = 49570432380. Its totient is φ = 8812521280.

The previous prime is 22031303201. The next prime is 22031303243. The reversal of 22031303240 is 4230313022.

It can be written as a sum of positive squares in 2 ways, for example, as 21539084644 + 492218596 = 146762^2 + 22186^2 .

It is a Harshad number since it is a multiple of its sum of digits (20).

It is not an unprimeable number, because it can be changed into a prime (22031303243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 275391251 + ... + 275391330.

Almost surely, 2^22031303240 is an apocalyptic number.

22031303240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22031303240 is an abundant number, since it is smaller than the sum of its proper divisors (27539129140).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

22031303240 is a wasteful number, since it uses less digits than its factorization.

22031303240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 550782592 (or 550782588 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 20.

Adding to 22031303240 its reverse (4230313022), we get a palindrome (26261616262).

The spelling of 22031303240 in words is "twenty-two billion, thirty-one million, three hundred three thousand, two hundred forty".