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20031031410 = 23513191268909
BaseRepresentation
bin10010101001111100…
…010100100001110010
31220200222220211100020
4102221330110201302
5312010421001120
613111354304310
71306246646325
oct225174244162
956628824306
1020031031410
118549aa4415
123a70428096
131b72c51210
14d804827bc
157c384a640
hex4a9f14872

20031031410 has 64 divisors (see below), whose sum is σ = 52043765760. Its totient is φ = 4904881920.

The previous prime is 20031031403. The next prime is 20031031429. The reversal of 20031031410 is 1413013002.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 20031031410.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 59965 + ... + 208944.

It is an arithmetic number, because the mean of its divisors is an integer number (813183840).

Almost surely, 220031031410 is an apocalyptic number.

20031031410 is an abundant number, since it is smaller than the sum of its proper divisors (32012734350).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20031031410 is a wasteful number, since it uses less digits than its factorization.

20031031410 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 269123.

The product of its (nonzero) digits is 72, while the sum is 15.

Adding to 20031031410 its reverse (1413013002), we get a palindrome (21444044412).

The spelling of 20031031410 in words is "twenty billion, thirty-one million, thirty-one thousand, four hundred ten".

Divisors: 1 2 3 5 6 10 13 15 26 30 39 65 78 130 191 195 382 390 573 955 1146 1910 2483 2865 4966 5730 7449 12415 14898 24830 37245 74490 268909 537818 806727 1344545 1613454 2689090 3495817 4033635 6991634 8067270 10487451 17479085 20974902 34958170 51361619 52437255 102723238 104874510 154084857 256808095 308169714 513616190 667701047 770424285 1335402094 1540848570 2003103141 3338505235 4006206282 6677010470 10015515705 20031031410