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310145125 = 5312971913
BaseRepresentation
bin10010011111000…
…111000001100101
3210121121000010111
4102133013001211
51113344121000
650435253021
710454122123
oct2237070145
9717530114
10310145125
1114a083694
1287a4a171
134c340734
142d294913
151c364cba
hex127c7065

310145125 has 16 divisors (see below), whose sum is σ = 387562032. Its totient is φ = 247795200.

The previous prime is 310145083. The next prime is 310145149. The reversal of 310145125 is 521541013.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 314721 + 309830404 = 561^2 + 17602^2 .

It is not a de Polignac number, because 310145125 - 29 = 310144613 is a prime.

It is a super-2 number, since 2×3101451252 = 192379997122531250, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 310145096 and 310145105.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 161169 + ... + 163081.

It is an arithmetic number, because the mean of its divisors is an integer number (24222627).

Almost surely, 2310145125 is an apocalyptic number.

It is an amenable number.

310145125 is a deficient number, since it is larger than the sum of its proper divisors (77416907).

310145125 is a wasteful number, since it uses less digits than its factorization.

310145125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3225 (or 3215 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 22.

The square root of 310145125 is about 17610.9376524931. The cubic root of 310145125 is about 676.8955407138.

Adding to 310145125 its reverse (521541013), we get a palindrome (831686138).

The spelling of 310145125 in words is "three hundred ten million, one hundred forty-five thousand, one hundred twenty-five".

Divisors: 1 5 25 125 1297 1913 6485 9565 32425 47825 162125 239125 2481161 12405805 62029025 310145125