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31044530430 = 2325808942643
BaseRepresentation
bin11100111010011001…
…011111000011111110
32222010112202112202100
4130322121133003332
51002034344433210
622132304005530
72146212104034
oct347231370376
988115675670
1031044530430
1112190912221
1260249008a6
132c098c3c44
141707068554
15c1a6a45c0
hex73a65f0fe

31044530430 has 48 divisors (see below), whose sum is σ = 80727650640. Its totient is φ = 8277323904.

The previous prime is 31044530423. The next prime is 31044530437. The reversal of 31044530430 is 3403544013.

31044530430 is a `hidden beast` number, since 310 + 4 + 45 + 304 + 3 + 0 = 666.

It is an interprime number because it is at equal distance from previous prime (31044530423) and next prime (31044530437).

It is a junction number, because it is equal to n+sod(n) for n = 31044530394 and 31044530403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31044530437) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 706689 + ... + 749331.

It is an arithmetic number, because the mean of its divisors is an integer number (1681826055).

Almost surely, 231044530430 is an apocalyptic number.

31044530430 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

31044530430 is an abundant number, since it is smaller than the sum of its proper divisors (49683120210).

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

31044530430 is a wasteful number, since it uses less digits than its factorization.

31044530430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50745 (or 50742 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 27.

The spelling of 31044530430 in words is "thirty-one billion, forty-four million, five hundred thirty thousand, four hundred thirty".

Divisors: 1 2 3 5 6 9 10 15 18 30 45 90 8089 16178 24267 40445 42643 48534 72801 80890 85286 121335 127929 145602 213215 242670 255858 364005 383787 426430 639645 728010 767574 1279290 1918935 3837870 344939227 689878454 1034817681 1724696135 2069635362 3104453043 3449392270 5174088405 6208906086 10348176810 15522265215 31044530430