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31053125 = 5519523
BaseRepresentation
bin111011001110…
…1010101000101
32011102122212202
41312131111011
530422200000
63025324245
7524642615
oct166352505
964378782
1031053125
111658a744
12a496685
13658343c
1441a4a45
152ad5dd5
hex1d9d545

31053125 has 24 divisors (see below), whose sum is σ = 40934880. Its totient is φ = 23490000.

The previous prime is 31053097. The next prime is 31053131. The reversal of 31053125 is 52135013.

It is not a de Polignac number, because 31053125 - 28 = 31052869 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 31053097 and 31053106.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 59114 + ... + 59636.

It is an arithmetic number, because the mean of its divisors is an integer number (1705620).

Almost surely, 231053125 is an apocalyptic number.

It is an amenable number.

31053125 is a deficient number, since it is larger than the sum of its proper divisors (9881755).

31053125 is an frugal number, since it uses more digits than its factorization.

31053125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 567 (or 547 counting only the distinct ones).

The product of its (nonzero) digits is 450, while the sum is 20.

The square root of 31053125 is about 5572.5330864877. The cubic root of 31053125 is about 314.3174099773.

Adding to 31053125 its reverse (52135013), we get a palindrome (83188138).

It can be divided in two parts, 310 and 53125, that added together give a palindrome (53435).

The spelling of 31053125 in words is "thirty-one million, fifty-three thousand, one hundred twenty-five".

Divisors: 1 5 19 25 95 125 475 523 625 2375 2615 3125 9937 11875 13075 49685 59375 65375 248425 326875 1242125 1634375 6210625 31053125