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31300 = 2252313
BaseRepresentation
bin111101001000100
31120221021
413221010
52000200
6400524
7160153
oct75104
946837
1031300
1121575
1216144
1311329
14b59a
15941a
hex7a44

31300 has 18 divisors (see below), whose sum is σ = 68138. Its totient is φ = 12480.

The previous prime is 31277. The next prime is 31307. The reversal of 31300 is 313.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 324 + 30976 = 18^2 + 176^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31307) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 57 + ... + 256.

231300 is an apocalyptic number.

It is an amenable number.

31300 is an abundant number, since it is smaller than the sum of its proper divisors (36838).

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

31300 is a wasteful number, since it uses less digits than its factorization.

31300 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 327 (or 320 counting only the distinct ones).

The product of its (nonzero) digits is 9, while the sum is 7.

The square root of 31300 is about 176.9180601295. The cubic root of 31300 is about 31.5148162432.

Adding to 31300 its reverse (313), we get a palindrome (31613).

Multiplying 31300 by its reverse (313), we get a square (9796900 = 31302).

31300 divided by its reverse (313) gives a square (100 = 102).

The spelling of 31300 in words is "thirty-one thousand, three hundred".

Divisors: 1 2 4 5 10 20 25 50 100 313 626 1252 1565 3130 6260 7825 15650 31300