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310142980 = 22572215307
BaseRepresentation
bin10010011111000…
…110100000000100
3210121120220012001
4102133012200010
51113344033410
650435235044
710454112640
oct2237064004
9717526161
10310142980
1114a082014
1287a48a84
134c33c774
142d293c20
151c36433a
hex127c6804

310142980 has 24 divisors (see below), whose sum is σ = 744343488. Its totient is φ = 106334688.

The previous prime is 310142953. The next prime is 310143011. The reversal of 310142980 is 89241013.

It is a happy number.

310142980 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1107514 + ... + 1107793.

It is an arithmetic number, because the mean of its divisors is an integer number (31014312).

Almost surely, 2310142980 is an apocalyptic number.

It is an amenable number.

310142980 is an abundant number, since it is smaller than the sum of its proper divisors (434200508).

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

310142980 is a wasteful number, since it uses less digits than its factorization.

310142980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2215323 (or 2215321 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 28.

The square root of 310142980 is about 17610.8767527344. The cubic root of 310142980 is about 676.8939802139.

Adding to 310142980 its reverse (89241013), we get a palindrome (399383993).

The spelling of 310142980 in words is "three hundred ten million, one hundred forty-two thousand, nine hundred eighty".

Divisors: 1 2 4 5 7 10 14 20 28 35 70 140 2215307 4430614 8861228 11076535 15507149 22153070 31014298 44306140 62028596 77535745 155071490 310142980