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311000076 = 22328638891
BaseRepresentation
bin10010100010010…
…111110000001100
3210200012102220100
4102202113300030
51114104000301
650505451100
710464312522
oct2242276014
9720172810
10311000076
1114a607a62
12881a0a90
134c57c91a
142d438312
151c483286
hex12897c0c

311000076 has 18 divisors (see below), whose sum is σ = 786139172. Its totient is φ = 103666680.

The previous prime is 310999993. The next prime is 311000077. The reversal of 311000076 is 670000113.

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (311000077) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4319410 + ... + 4319481.

Almost surely, 2311000076 is an apocalyptic number.

311000076 is a gapful number since it is divisible by the number (36) formed by its first and last digit.

It is an amenable number.

311000076 is an abundant number, since it is smaller than the sum of its proper divisors (475139096).

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

311000076 is a wasteful number, since it uses less digits than its factorization.

311000076 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8638901 (or 8638896 counting only the distinct ones).

The product of its (nonzero) digits is 126, while the sum is 18.

The square root of 311000076 is about 17635.1942433306. The cubic root of 311000076 is about 677.5169504163.

Adding to 311000076 its reverse (670000113), we get a palindrome (981000189).

The spelling of 311000076 in words is "three hundred eleven million, seventy-six", and thus it is an aban number.

Divisors: 1 2 3 4 6 9 12 18 36 8638891 17277782 25916673 34555564 51833346 77750019 103666692 155500038 311000076