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31474640430 = 2325794426813
BaseRepresentation
bin11101010100000010…
…001110011000101110
310000020112002101202100
4131110002032120232
51003430001443210
622243110435530
72162654013042
oct352402163056
9100215071670
1031474640430
1112391683232
126124962ba6
132c77a485bc
14174822a022
15c433145c0
hex75408e62e

31474640430 has 48 divisors (see below), whose sum is σ = 82869958080. Its totient is φ = 8286992064.

The previous prime is 31474640419. The next prime is 31474640459. The reversal of 31474640430 is 3404647413.

31474640430 is a `hidden beast` number, since 3 + 1 + 4 + 7 + 4 + 640 + 4 + 3 + 0 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2206297 + ... + 2220516.

It is an arithmetic number, because the mean of its divisors is an integer number (1726457460).

Almost surely, 231474640430 is an apocalyptic number.

31474640430 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

31474640430 is an abundant number, since it is smaller than the sum of its proper divisors (51395317650).

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

31474640430 is a wasteful number, since it uses less digits than its factorization.

31474640430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4426905 (or 4426902 counting only the distinct ones).

The product of its (nonzero) digits is 96768, while the sum is 36.

The spelling of 31474640430 in words is "thirty-one billion, four hundred seventy-four million, six hundred forty thousand, four hundred thirty".

Divisors: 1 2 3 5 6 9 10 15 18 30 45 79 90 158 237 395 474 711 790 1185 1422 2370 3555 7110 4426813 8853626 13280439 22134065 26560878 39841317 44268130 66402195 79682634 132804390 199206585 349718227 398413170 699436454 1049154681 1748591135 2098309362 3147464043 3497182270 5245773405 6294928086 10491546810 15737320215 31474640430