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20331103030213 = 161531125865023
BaseRepresentation
bin1001001111101101101000…
…01011001000101111000101
32122222122010112020011202211
410213312310023020233011
510131101044333431323
6111123551345103421
74165605454236523
oct447666413105705
978878115204684
1020331103030213
1165294106a2288
122344379327b71
13b462a3b79721
145040600d5313
15253cd2e0270d
hex127db42c8bc5

20331103030213 has 4 divisors (see below), whose sum is σ = 20331229056768. Its totient is φ = 20330977003660.

The previous prime is 20331103030181. The next prime is 20331103030243. The reversal of 20331103030213 is 31203030113302.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 20331103030213 - 25 = 20331103030181 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20331103030243) 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 3 ways as a sum of consecutive naturals, for example, 62770981 + ... + 63094042.

It is an arithmetic number, because the mean of its divisors is an integer number (5082807264192).

Almost surely, 220331103030213 is an apocalyptic number.

It is an amenable number.

20331103030213 is a deficient number, since it is larger than the sum of its proper divisors (126026555).

20331103030213 is a wasteful number, since it uses less digits than its factorization.

20331103030213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 126026554.

The product of its (nonzero) digits is 972, while the sum is 22.

Adding to 20331103030213 its reverse (31203030113302), we get a palindrome (51534133143515).

The spelling of 20331103030213 in words is "twenty trillion, three hundred thirty-one billion, one hundred three million, thirty thousand, two hundred thirteen".

Divisors: 1 161531 125865023 20331103030213