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31412030020 = 2257577388859
BaseRepresentation
bin11101010000010011…
…011000101001000100
310000002011021110102021
4131100103120221010
51003312434430040
622232552452524
72161263564310
oct352023305104
9100064243367
1031412030020
111235a2aa098
1261079aa144
132c67a96417
14173dbacb40
15c3ca9824a
hex7504d8a44

31412030020 has 48 divisors (see below), whose sum is σ = 75519722880. Its totient is φ = 10751145984.

The previous prime is 31412029997. The next prime is 31412030033. The reversal of 31412030020 is 2003021413.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 31412029976 and 31412030003.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 113650 + ... + 275209.

It is an arithmetic number, because the mean of its divisors is an integer number (1573327560).

Almost surely, 231412030020 is an apocalyptic number.

It is an amenable number.

31412030020 is an abundant number, since it is smaller than the sum of its proper divisors (44107692860).

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

31412030020 is a wasteful number, since it uses less digits than its factorization.

31412030020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 389452 (or 389450 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 16.

Adding to 31412030020 its reverse (2003021413), we get a palindrome (33415051433).

The spelling of 31412030020 in words is "thirty-one billion, four hundred twelve million, thirty thousand, twenty".

Divisors: 1 2 4 5 7 10 14 20 28 35 70 140 577 1154 2308 2885 4039 5770 8078 11540 16156 20195 40390 80780 388859 777718 1555436 1944295 2722013 3888590 5444026 7777180 10888052 13610065 27220130 54440260 224371643 448743286 897486572 1121858215 1570601501 2243716430 3141203002 4487432860 6282406004 7853007505 15706015010 31412030020