22031315345 has 8 divisors (see below), whose sum is σ = 28471238376. Its totient is φ = 16269278976.

The previous prime is 22031315333. The next prime is 22031315381. The reversal of 22031315345 is 54351313022.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 247621696 + 21783693649 = 15736^2 + 147593^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 22031315345 - 2¹² = 22031311249 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 169471592 + ... + 169471721.

It is an arithmetic number, because the mean of its divisors is an integer number (3558904797).

Almost surely, 2^22031315345 is an apocalyptic number.

It is an amenable number.

22031315345 is a deficient number, since it is larger than the sum of its proper divisors (6439923031).

22031315345 is a wasteful number, since it uses less digits than its factorization.

22031315345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 338943331.

The product of its (nonzero) digits is 10800, while the sum is 29.

Adding to 22031315345 its reverse (54351313022), we get a palindrome (76382628367).

The spelling of 22031315345 in words is "twenty-two billion, thirty-one million, three hundred fifteen thousand, three hundred forty-five".