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31250003472 = 243424112657
BaseRepresentation
bin11101000110101001…
…010011011000010000
32222122212101122210000
4131012221103120100
51003000000102342
622204524010000
72154255434562
oct350651233020
988585348700
1031250003472
11122868a3156
126081690900
132c4034641c
141726473332
15c2d74044c
hex746a53610

31250003472 has 50 divisors (see below), whose sum is σ = 90446580158. Its totient is φ = 10416667392.

The previous prime is 31250003467. The next prime is 31250003501. The reversal of 31250003472 is 27430005213.

31250003472 is a `hidden beast` number, since 312 + 5 + 0 + 0 + 0 + 347 + 2 = 666.

It can be written as a sum of positive squares in only one way, i.e., 27375687936 + 3874315536 = 165456^2 + 62244^2 .

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 12055033 + ... + 12057624.

Almost surely, 231250003472 is an apocalyptic number.

It is an amenable number.

31250003472 is an abundant number, since it is smaller than the sum of its proper divisors (59196576686).

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

31250003472 is a wasteful number, since it uses less digits than its factorization.

31250003472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24112677 (or 24112662 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 27.

Adding to 31250003472 its reverse (27430005213), we get a palindrome (58680008685).

The spelling of 31250003472 in words is "thirty-one billion, two hundred fifty million, three thousand, four hundred seventy-two".

Divisors: 1 2 3 4 6 8 9 12 16 18 24 27 36 48 54 72 81 108 144 162 216 324 432 648 1296 24112657 48225314 72337971 96450628 144675942 192901256 217013913 289351884 385802512 434027826 578703768 651041739 868055652 1157407536 1302083478 1736111304 1953125217 2604166956 3472222608 3906250434 5208333912 7812500868 10416667824 15625001736 31250003472