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12282020031 = 353151511559
BaseRepresentation
bin10110111000001000…
…01100000010111111
31011200221210021002210
423130010030002333
5200123144120111
65350422151503
7613234306401
oct133404140277
934627707083
1012282020031
115232975486
122469282593
131209708798
14847270b71
154bd3cc0a6
hex2dc10c0bf

12282020031 has 16 divisors (see below), whose sum is σ = 16795537920. Its totient is φ = 7980304800.

The previous prime is 12282020017. The next prime is 12282020083. The reversal of 12282020031 is 13002028221.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2k-12282020031 is a prime.

It is a super-2 number, since 2×122820200312 (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12282020431) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 231771 + ... + 279788.

It is an arithmetic number, because the mean of its divisors is an integer number (1049721120).

Almost surely, 212282020031 is an apocalyptic number.

12282020031 is a deficient number, since it is larger than the sum of its proper divisors (4513517889).

12282020031 is a wasteful number, since it uses less digits than its factorization.

12282020031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 511766.

The product of its (nonzero) digits is 384, while the sum is 21.

Adding to 12282020031 its reverse (13002028221), we get a palindrome (25284048252).

The spelling of 12282020031 in words is "twelve billion, two hundred eighty-two million, twenty thousand, thirty-one".

Divisors: 1 3 53 151 159 453 8003 24009 511559 1534677 27112627 77245409 81337881 231736227 4094006677 12282020031