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31483308672 = 273227329261
BaseRepresentation
bin11101010100100011…
…010010101010000000
310000021010101210100100
4131110203102222000
51003434211334142
622244020322400
72163120464634
oct352443225200
9100233353310
1031483308672
1112396563872
126127843400
132c79791c3a
141749444dc4
15c43e77b4c
hex7548d2a80

31483308672 has 48 divisors (see below), whose sum is σ = 90596503530. Its totient is φ = 10494435840.

The previous prime is 31483308671. The next prime is 31483308691. The reversal of 31483308672 is 27680338413.

It can be written as a sum of positive squares in only one way, i.e., 30787615296 + 695693376 = 175464^2 + 26376^2 .

It is a tau number, because it is divible by the number of its divisors (48).

It is not an unprimeable number, because it can be changed into a prime (31483308671) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 13663479 + ... + 13665782.

Almost surely, 231483308672 is an apocalyptic number.

31483308672 is a gapful number since it is divisible by the number (32) formed by its first and last digit.

It is an amenable number.

31483308672 is an abundant number, since it is smaller than the sum of its proper divisors (59113194858).

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

31483308672 is a wasteful number, since it uses less digits than its factorization.

31483308672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27329281 (or 27329266 counting only the distinct ones).

The product of its (nonzero) digits is 580608, while the sum is 45.

The spelling of 31483308672 in words is "thirty-one billion, four hundred eighty-three million, three hundred eight thousand, six hundred seventy-two".

Divisors: 1 2 3 4 6 8 9 12 16 18 24 32 36 48 64 72 96 128 144 192 288 384 576 1152 27329261 54658522 81987783 109317044 163975566 218634088 245963349 327951132 437268176 491926698 655902264 874536352 983853396 1311804528 1749072704 1967706792 2623609056 3498145408 3935413584 5247218112 7870827168 10494436224 15741654336 31483308672