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20032210031 = 531590723761
BaseRepresentation
bin10010101010000000…
…110100010001101111
31220201002010201002212
4102222000310101233
5312011221210111
613111435441035
71306262655461
oct225200642157
956632121085
1020032210031
11854a729989
123a708b617b
131b73274822
14d806ac131
157c39ce98b
hex4aa03446f

20032210031 has 8 divisors (see below), whose sum is σ = 20412318384. Its totient is φ = 19652181120.

The previous prime is 20032209991. The next prime is 20032210039. The reversal of 20032210031 is 13001223002.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-20032210031 is a prime.

It is a super-2 number, since 2×200322100312 (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20032209988 and 20032210015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20032210039) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 831191 + ... + 854951.

It is an arithmetic number, because the mean of its divisors is an integer number (2551539798).

Almost surely, 220032210031 is an apocalyptic number.

20032210031 is a deficient number, since it is larger than the sum of its proper divisors (380108353).

20032210031 is a wasteful number, since it uses less digits than its factorization.

20032210031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39721.

The product of its (nonzero) digits is 72, while the sum is 14.

Adding to 20032210031 its reverse (13001223002), we get a palindrome (33033433033).

The spelling of 20032210031 in words is "twenty billion, thirty-two million, two hundred ten thousand, thirty-one".

Divisors: 1 53 15907 23761 843071 1259333 377966227 20032210031