20031315355445 has 8 divisors (see below), whose sum is σ = 24037741309344. Its totient is φ = 16024943695824.

The previous prime is 20031315355427. The next prime is 20031315355483. The reversal of 20031315355445 is 54455351313002.

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 20031315355445 - 2⁸ = 20031315355189 is a prime.

It is a super-2 number, since 2×20031315355445² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent 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, 12757439 + ... + 14241308.

It is an arithmetic number, because the mean of its divisors is an integer number (3004717663668).

Almost surely, 2^{20031315355445} is an apocalyptic number.

It is an amenable number.

20031315355445 is a deficient number, since it is larger than the sum of its proper divisors (4006425953899).

20031315355445 is a wasteful number, since it uses less digits than its factorization.

20031315355445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27147139.

The product of its (nonzero) digits is 540000, while the sum is 41.

Adding to 20031315355445 its reverse (54455351313002), we get a palindrome (74486666668447).

The spelling of 20031315355445 in words is "twenty trillion, thirty-one billion, three hundred fifteen million, three hundred fifty-five thousand, four hundred forty-five".