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31250000316 = 22315718778837
BaseRepresentation
bin11101000110101001…
…010010100110111100
32222122212101111110010
4131012221102212330
51003000000002231
622204523543220
72154255422433
oct350651224674
988585344403
1031250000316
11122868a0847
12608168ab10
132c40344b62
14172647211a
15c2d73e546
hex746a529bc

31250000316 has 48 divisors (see below), whose sum is σ = 73428507936. Its totient is φ = 10343633664.

The previous prime is 31250000269. The next prime is 31250000317. The reversal of 31250000316 is 61300005213.

It is a junction number, because it is equal to n+sod(n) for n = 31250000292 and 31250000301.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31250000317) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3531850 + ... + 3540686.

It is an arithmetic number, because the mean of its divisors is an integer number (1529760582).

Almost surely, 231250000316 is an apocalyptic number.

It is an amenable number.

31250000316 is an abundant number, since it is smaller than the sum of its proper divisors (42178507620).

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

31250000316 is a wasteful number, since it uses less digits than its factorization.

31250000316 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10878 (or 10876 counting only the distinct ones).

The product of its (nonzero) digits is 540, while the sum is 21.

Adding to 31250000316 its reverse (61300005213), we get a palindrome (92550005529).

The spelling of 31250000316 in words is "thirty-one billion, two hundred fifty million, three hundred sixteen", and thus it is an aban number.

Divisors: 1 2 3 4 6 12 157 314 471 628 942 1877 1884 3754 5631 7508 8837 11262 17674 22524 26511 35348 53022 106044 294689 589378 884067 1178756 1387409 1768134 2774818 3536268 4162227 5549636 8324454 16587049 16648908 33174098 49761147 66348196 99522294 199044588 2604166693 5208333386 7812500079 10416666772 15625000158 31250000316