20450543213031 has 32 divisors (see below), whose sum is σ = 27991439433216. Its totient is φ = 13276779600000.

The previous prime is 20450543212903. The next prime is 20450543213053. The reversal of 20450543213031 is 13031234505402.

It is not a de Polignac number, because 20450543213031 - 2⁷ = 20450543212903 is a prime.

It is a super-2 number, since 2×20450543213031² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20450543212983 and 20450543213001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20450543213731) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6337801 + ... + 9003821.

It is an arithmetic number, because the mean of its divisors is an integer number (874732482288).

Almost surely, 2^{20450543213031} is an apocalyptic number.

20450543213031 is a deficient number, since it is larger than the sum of its proper divisors (7540896220185).

20450543213031 is a wasteful number, since it uses less digits than its factorization.

20450543213031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2666503.

The product of its (nonzero) digits is 43200, while the sum is 33.

Adding to 20450543213031 its reverse (13031234505402), we get a palindrome (33481777718433).

The spelling of 20450543213031 in words is "twenty trillion, four hundred fifty billion, five hundred forty-three million, two hundred thirteen thousand, thirty-one".