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31060 = 2251553
BaseRepresentation
bin111100101010100
31120121101
413211110
51443220
6355444
7156361
oct74524
946541
1031060
1121377
1215b84
13111a3
14b468
15930a
hex7954

31060 has 12 divisors (see below), whose sum is σ = 65268. Its totient is φ = 12416.

The previous prime is 31051. The next prime is 31063. The reversal of 31060 is 6013.

It can be written as a sum of positive squares in 2 ways, for example, as 6724 + 24336 = 82^2 + 156^2 .

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31063) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 757 + ... + 796.

It is an arithmetic number, because the mean of its divisors is an integer number (5439).

231060 is an apocalyptic number.

It is an amenable number.

31060 is an abundant number, since it is smaller than the sum of its proper divisors (34208).

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

It is a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32634).

31060 is a wasteful number, since it uses less digits than its factorization.

31060 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1562 (or 1560 counting only the distinct ones).

The product of its (nonzero) digits is 18, while the sum is 10.

The square root of 31060 is about 176.2384748005. The cubic root of 31060 is about 31.4340604344.

Adding to 31060 its reverse (6013), we get a palindrome (37073).

The spelling of 31060 in words is "thirty-one thousand, sixty".

Divisors: 1 2 4 5 10 20 1553 3106 6212 7765 15530 31060